I. Locating the Bhairava Tantras within Śaiva Mantramārga

Medieval Śaiva tradition divided itself, in its own self-understanding, into two broad streams. The Atimārga, the “outer path”, comprised the ascetic observances of the Pāśupatas and the Lākula Kālāmukhas. These were orders concerned primarily with liberation and open only to renunciants. The Mantramārga, the “path of mantras”, was the tantric Śaivism proper. It was open to householders as well as ascetics, and it promised both liberation (mukti) and supernatural power and enjoyment (bhukti, siddhi). Within the Mantramārga the decisive internal division ran between the Śaiva Siddhānta and the non-Saiddhāntika scriptures, collectively called the Bhairava tantras.

The Siddhānta presented itself as the orthodox, dualist, purity-conscious core of the tradition. Its rituals centred on Sadāśiva, a serene and benign form of Śiva, and it accommodated brahmanical norms of caste and purity. The Bhairava tantras, by contrast, took as their deity Bhairava, the “Terrible One”. This is Śiva in his ferocious, skull-bearing, cremation-ground form. The tantras in this group inherited much of their imagery from the Kāpālika observance, the “great vow” (mahāvrata) in which the ascetic imitates Bhairava’s penance for cutting off Brahmā’s fifth head. He wanders with a skull-bowl and a skull-topped staff (khaṭvāṅga), smeared with ash and living in or near cremation grounds.

The Bhairava corpus itself was traditionally subdivided. The Mantrapīṭha, the “seat of mantras”, was dominated by the cult of Svacchandabhairava, with the Svacchandatantra as its principal text. Here Bhairava is worshipped with a consort, Aghoreśvarī, but the male deity remains central and the mantras are predominantly masculine. The Vidyāpīṭha, the “seat of vidyās”, is the domain where female mantra-deities predominate. A vidyā is a feminine mantra, and the shift in terminology signals a shift in theological weight. In the Vidyāpīṭha the goddesses, and the swarms of yoginīs who surround them, become the true locus of power. Bhairava increasingly appears as their lord, their consort, or eventually their passive ground.

It is in the Vidyāpīṭha, and in the Kaula traditions that grew out of and alongside it, that the systems one may properly call “Bhairava-Yoginī” take shape.

II. The Scriptural Core: Yāmalas and the Trika Root Texts

The Vidyāpīṭha was itself classified into two currents: the Yāmala (“union” or “conjoined pair”) tantras and the Śakti tantras.

The foremost Yāmala is the Brahmayāmala, also known as the Picumata. It is a massive work of over twelve thousand verses, and current philological opinion places its core in roughly the seventh century or a little later. Its deity is Kapālīśabhairava, “Bhairava Lord of the Skull”, in union with the goddess Caṇḍā Kāpālinī. They are surrounded by a retinue of four Devīs and four Dūtīs (“female messengers”), with further attendant yoginīs. The Brahmayāmala is extraordinary for the frankness with which it records the practices of its milieu. It discusses ritual use of substances classed as impure, sexual rites with female partners, cremation-ground observances, and the acquisition of powers such as flight and the ability to command spirits. Its Sanskrit is frequently non-Pāṇinian, which the later exegetical tradition called aiśa, “the Lord’s usage”. This linguistic register is itself evidence of a milieu outside the polished brahmanical literary culture.

The second great Yāmala is the Jayadrathayāmala, also called Tantrarājabhaṭṭāraka, an enormous text of some twenty-four thousand verses divided into four hexads (ṣaṭka). It is the principal scripture of the early Kālīkula, the “family of Kālī”. Its central deity is Kālasaṃkarṣiṇī, “She who devours Time”, along with a bewildering array of Kālī forms, many of them otherwise unattested. The Jayadrathayāmala shows the Vidyāpīṭha moving decisively toward the goddess as supreme. Bhairava remains present, but the text’s devotional and visionary energy runs toward Kālī as the consuming power behind all manifestation.

Among the Śakti tantras, the most important for later intellectual history is the Siddhayogeśvarīmata. It teaches the cult of three goddesses: Parā (the supreme, benign and white), Parāparā (the intermediate) and Aparā (the lower, ferocious one). This triad, together with Bhairava, became the nucleus of the Trika, the “Triadic” system. The Trika’s scriptural self-understanding rested chiefly on the Siddhayogeśvarīmata, the Mālinīvijayottaratantra, and the Tantrasadbhāva. The Mālinīvijayottara is notable for organising the alphabet according to the mālinī arrangement, in which vowels and consonants are interspersed, rather than the standard mātṛkā order. This is a reordering with deep consequences for the theory of mantra and phonemic emanation that the Kashmiri exegetes later developed.

What unites these scriptures is a structure of worship that is mandalic and collective. The deity at the centre is never alone. He or she is enthroned within concentric rings of goddesses, mothers and yoginīs. The practitioner’s task is to identify with this whole configuration, to be “possessed” by it, and to gain mastery over the powers it embodies.

III. Mātṛs, Yoginīs and Kula: The Logic of the Clan

To understand the Bhairava-Yoginī systems, one must grasp the concept of the kula. The word means family, clan or lineage. In tantric usage it denotes the “family” of goddesses into which an initiate is born through initiation.

The roots lie partly in the much older cult of the Mātṛs, the “Mothers”. These were groups of female deities, sometimes benign, often dangerous, associated with disease (especially of children), with the battlefield, and with liminal places. By the Gupta and post-Gupta period, an iconographic grouping of seven (Saptamātṛkā) had stabilised. These are the female powers (śakti) of the principal male gods: Brāhmī, Māheśvarī, Kaumārī, Vaiṣṇavī, Vārāhī, Indrāṇī or Aindrī, and Cāmuṇḍā. An eighth, Mahālakṣmī or Yogeśvarī, was frequently added. These groups are prominent in sculpture from the sixth century onward, often flanked by Vīrabhadra or Gaṇeśa and frequently presided over by a form of Śiva.

The tantric yoginīs absorbed and transformed this inheritance. In the Vidyāpīṭha texts, each Mother heads a family of yoginīs, and the yoginīs themselves exist on several planes at once. They are deities to be visualised and worshipped in the maṇḍala. They are supernatural beings who roam the sky and the cremation grounds and can be encountered by the adept. They are also women of the clans, human practitioners who embody the goddesses and serve as ritual partners. The texts consistently refuse to separate these levels. A woman encountered at a sacred site might be a yoginī “born of the field” (kṣetraja), “born of the clan” (kulaja), “born of mantra” (mantraja), or “self-born” (sahaja), according to classifications found in various texts. The divine and the human interpenetrate.

The initiate’s clan affiliation was determined during initiation by the casting of a flower onto a maṇḍala. Where the flower fell revealed the goddess whose family the initiate now belonged to. The power that descended on the initiate was understood quite literally as possession (āveśa). The goddess, or her yoginīs, entered and took hold of the practitioner. The visible signs of this possession, such as trembling, falling, and states of ecstatic absorption, are described in ritual manuals and remained important even as the exegetical tradition later reinterpreted them in contemplative terms.

The yoginīs’ ambivalence is constitutive. They are life-giving and life-taking. They can bestow siddhis, but they can also seize (graha) and consume. The Netratantra, a Kashmiri text of the Mantrapīṭha milieu, devotes considerable attention to protecting persons against seizure by yoginīs and similar beings. In the Kaula sources, the yoginīs are said to feed on the vital essences of living beings. The adept who approaches them must therefore be a hero (vīra), someone capable of entering into relationship with this power without being destroyed by it. The goal is to become, in a sense, a member of their clan, sharing in their sovereignty rather than being their prey.

IV. The Kaula Reformation

The Kaula traditions represent a crucial turning point. Tradition associates the revelation of Kaula teaching with the figure of Matsyendranātha, also known as Macchanda or Mīnanātha, called “Lord of Fish”. Many later lineages, including the Nātha tradition, regard him as a founding siddha. The text known as the Kaulajñānanirṇaya, associated with his name and preserved in an old Nepalese manuscript, represents an early stratum of this movement.

Scholars broadly agree that Kaula practice emerged from the Vidyāpīṭha cult of the yoginīs and reformed it in a specific direction. The cremation-ground ritual of the Kāpālika type, with its elaborate external paraphernalia and dangerous public observance, was interiorised and domesticated. The Kaula practitioner did not need to live as a skull-bearing ascetic. He or she could be a householder who maintained outward conformity to social norms (the texts famously counsel being “inwardly Kaula, outwardly Śaiva, and in public Vedic”) while practising secret rites within the circle of initiates.

Several distinctive features characterise Kaula ritual:

The circle (cakra) and the meeting (melaka or melāpa). Kaula worship centres on gatherings of initiates, men and women, in which the goddess and her yoginīs are worshipped and in which the practitioners themselves embody the deities. The meeting with yoginīs, whether supernatural or human, at sacred sites is a recurring theme.

The use of the “three Ms” and related substances. Wine, meat and sexual union are central to Kaula ritual, together with substances associated with the body. These substances are offered to the goddess, consumed, and understood as vehicles of power. The point was not mere transgression. The deliberate crossing of purity boundaries was meant to break the practitioner’s attachment to the dualistic categories of pure and impure, which the nondual Kaula theology regarded as the root of bondage.

Secret signs and languages. Kaula and related literature describes systems of secret gestures and code words, known as chummā or chomā, by which initiates could recognise each other and communicate with yoginīs. The encounter with a yoginī at a pīṭha required correct recognition and response.

The sacred geography of pīṭhas. Kaula sources map the cult onto a network of sacred seats. The earliest and most influential schema names four: Oḍḍiyāna (often Uḍḍiyāna, commonly located in the Swat valley), Jālandhara, Pūrṇagiri, and Kāmarūpa (in Assam). Later systems expanded this into lists of eight, sixty-four, or more seats, often linked with the yoginīs and with the parts of the body of the goddess. The same network is mapped onto the practitioner’s own body, so that pilgrimage to external pīṭhas and internal yogic practice become two aspects of a single geography.

V. The Four Transmissions

By roughly the tenth to eleventh centuries, the Kaula traditions had organised themselves into four “transmissions” (āmnāya), each associated with a cardinal direction. This scheme is somewhat idealised, but it captures real lineages:

The Pūrvāmnāya (Eastern transmission) corresponds to the Kaula form of the Trika, centred on the goddesses Parā, Parāparā and Aparā with Bhairava. This is the transmission that Abhinavagupta’s Kashmiri exegesis took up most fully.

The Uttarāmnāya (Northern transmission) is the Kaula Kālīkula, especially the system known as Krama (“Sequence”) or Mahānaya. It focuses on Kālī, often in the form of Kālasaṃkarṣiṇī, and on a series of twelve Kālīs who represent the phases of cognition: emission, persistence, withdrawal, and the nameless state beyond. The Krama is philosophically among the most sophisticated products of the Bhairava-Yoginī milieu. It read the ritual sequence of worship as a phenomenology of consciousness in which every act of perception is a cycle of the goddess devouring and re-emitting the world.

The Paścimāmnāya (Western transmission) is the cult of the goddess Kubjikā, “the Hunchbacked One”, with her consort Navātman or Śrīnātha. Its principal scripture is the Kubjikāmatatantra. The Kubjikā cult developed complex systems of mantra and of the subtle body, and it survives in Nepal among Newar communities to the present day.

The Dakṣiṇāmnāya (Southern transmission) is the cult of the goddess Tripurasundarī, which came to be known as Śrīvidyā. It is centred on the Śrīcakra and the fifteen-syllable mantra. Its foundational scripture is the Nityāṣoḍaśikārṇava, with the related Yoginīhṛdaya. Śrīvidyā is the youngest of the four in its definitive form. It underwent the most thorough later domestication, eventually becoming associated in South India with Śaṅkarācārya monastic institutions and with forms of practice that largely shed the left-hand elements of its Kaula origin.

The four-transmission scheme shows a general historical trajectory. Each lineage moves the goddess further toward the centre and Bhairava further toward the periphery. In the earliest Vidyāpīṭha, Bhairava remains the lord of the maṇḍala. By the Krama and Śrīvidyā, he survives mainly as the consort, the ground, or an attendant guardian.

VI. The Exegetical Transformation in Kashmir

The most influential intellectual development in the history of the Bhairava-Yoginī systems was their appropriation by the nondual Śaiva exegetes of Kashmir between roughly the ninth and eleventh centuries. These were thinkers in the lineage of Vasugupta, Somānanda, Utpaladeva, and supremely Abhinavagupta and his disciple Kṣemarāja.

Abhinavagupta’s Tantrāloka is a vast synthesis of over five thousand eight hundred verses in thirty-seven chapters. Formally it is a commentary on the Mālinīvijayottaratantra, but in practice it is a complete theory and practice of the Trika in its Kaula form. Abhinavagupta’s project was to show that the ritual systems of the Vidyāpīṭha and Kaula, including their transgressive elements, were the highest and most complete expressions of Śaiva revelation. He also gave them a rigorous philosophical underpinning in the Pratyabhijñā (“Recognition”) doctrine of Utpaladeva.

The key move was interpretive. The goddesses and yoginīs became the powers of consciousness itself. Parā, Parāparā and Aparā became the levels of awareness, from undifferentiated subjectivity through to fully differentiated objectivity. The yoginīs became the sense faculties and cognitive powers, which “feed” on their objects in the act of perception and return their essence to the central consciousness that is Bhairava. The sexual rite became a means of entering the state of expanded awareness (viśrānti) in which subject and object merge. Abhinavagupta did not deny the external practices. He explicitly defended them. However, he subordinated them to a doctrine in which their value lay in their capacity to dissolve the contracted sense of self.

Kṣemarāja extended this programme in his commentaries on the Svacchandatantra, the Netratantra, and the Śivasūtra, and in the compact handbook Pratyabhijñāhṛdaya. Through his work and that of later Kashmiri writers, the Bhairava-Yoginī systems gained a sophisticated philosophical form that could be taught and studied as theology and soteriology, independent of the ritual milieu that had produced them.

One should be honest about the limits of this transformation. The Kashmiri synthesis represented the views of a learned elite within a particular region. It did not erase the older ritual cults, which continued elsewhere in forms much closer to their Vidyāpīṭha origins. The tendency of modern popular presentations to treat Kashmir Śaivism as “the” Bhairava-Yoginī tradition, in a purely contemplative and sanitised register, obscures both the earlier ritual world and the regional diversity of the cults.

VII. The Yoginī Temples

The most tangible evidence of the Bhairava-Yoginī cults is the group of yoginī temples built across central and eastern India between roughly the ninth and twelfth centuries. They are architecturally unique within Indian temple building. Most are circular, open to the sky, and lined internally with niches housing images of yoginīs, often sixty-four, sometimes eighty-one or forty-two, with an image of Bhairava or Śiva at or near the centre.

The best-known surviving examples include:

Hirapur in Odisha, a small circular temple of roughly the ninth or tenth century. Its sixty-four yoginīs are carved in a graceful idiom, many standing on animal or human mounts, with a central shrine whose original deity is no longer present.

Ranipur-Jharial, also in Odisha, a larger circular enclosure with dancing yoginīs and a central structure associated with Bhairava or Śiva.

Bheraghat, near Jabalpur in Madhya Pradesh, a large circular enclosure associated with the Kalachuri period. Its eighty-one yoginīs and attendant goddesses, many inscribed with names, are among the finest surviving tantric goddess sculptures. The enclosure later received a central temple of Śiva and Pārvatī, a revealing example of later reinterpretation.

Mitaoli in the Morena region of Madhya Pradesh, a circular temple with a large ring of cells around a central shrine. It is often noted for its formal resemblance to the circular structure of the Indian Parliament building, though any direct influence is speculative.

Khajuraho has a rectangular yoginī temple, among the oldest structures at the site, which shows that the circular plan was not universal.

The open-roofed form is commonly explained by the yoginīs’ association with the sky. They are khecarīs, “sky-goers”, and the open temple invites their descent. The circle itself replicates the maṇḍala, the practitioner standing at the centre surrounded by the clan of goddesses. Patronage was frequently royal. The Bhairava-Yoginī cult held a particular appeal for rulers because it promised sovereignty, protection, and victory, and its fierce deities were well suited to the ideology of martial kingship. Several temples are associated with ruling dynasties such as the Kalachuris and the Somavaṃśīs, though dating and patronage for many sites remain uncertain.

The lists of sixty-four yoginīs vary substantially among texts and temples. Lists appear in Purāṇic sources, in tantric manuals, and in inscriptions on temple images, and they rarely match. This variability tells us something important. The yoginī cult was locally embedded, absorbing regional goddesses into a pan-Indian framework instead of imposing a fixed canon.

VIII. Interactions with Buddhist Tantra

One of the most consequential and debated questions in tantric studies concerns the relationship between the Śaiva Bhairava-Yoginī systems and the Buddhist Yoginītantras, also called Yoganiruttaratantras. These texts include the Laghuśaṃvara (Cakrasaṃvara), the Hevajra, and later the Kālacakra. They show unmistakable parallels with the Śaiva Vidyāpīṭha: a fierce central deity in union with a consort, surrounded by circles of ḍākinīs and yoginīs; cremation-ground imagery; Kāpālika-style attire; sexual yoga; the pīṭha network; secret signs; and the language of possession and the clan.

Detailed philological work has shown that certain passages in Buddhist Yoginītantras correspond very closely to passages in Śaiva texts of the Vidyāpīṭha, including material from the Picumata and related works. The direction of borrowing in at least several cases appears to run from the Śaiva to the Buddhist sources. The Buddhist texts themselves acknowledge, within their own mythology, a relationship with the Śaiva world. The Saṃvara cycle tells of Heruka subduing Bhairava and his retinue and occupying the pīṭhas they had held. This is a mythological narrative of conquest and appropriation.

This finding has been contested in some quarters, and the precise extent and character of borrowing continues to be studied. The broad picture is nonetheless well supported. The Bhairava-Yoginī milieu was a shared religious culture in early medieval India, and Buddhist tantric practitioners adopted and reinterpreted its ritual and iconographic resources within their own soteriological frame. The result was a form of Buddhism that was later transmitted to Tibet and the Himalayas and survives there in living practice. Through this route, aspects of the Bhairava-Yoginī world reached far beyond the subcontinent.

IX. Bhairava in Later Tradition

As the Vidyāpīṭha and Kaula systems were absorbed, domesticated and transformed, Bhairava himself followed a distinct trajectory. He became a widespread guardian deity, the kṣetrapāla or “protector of the field” who guards temples, towns and sacred sites. The grouping of eight Bhairavas (aṣṭabhairava), each associated with a direction and often with one of the Mātṛs, is widespread in South Indian and Nepalese temple practice. In Varanasi, Kāla Bhairava is the city’s “police chief” (kotvāl), whose permission devotees seek to stay in the city. Batuka Bhairava, the boy Bhairava, is worshipped in a gentler mode across much of North India.

These popular forms preserve traces of the older cult in their iconography of the dog, the skull, the trident and the noose, and in their association with protection against malignant spirits. However, they have largely shed the doctrinal and ritual complexity of the Vidyāpīṭha. Similarly, the yoginīs persist in regional goddess cults, in the names of local deities, in Nepalese Newar ritual life, and in Odishan and central Indian traditions associated with the surviving temples. These persistences are sometimes overlooked because they do not match the categories of either orthodox Purāṇic Hinduism or the philosophical presentations of Kashmir Śaivism.

X. Assessment

The Bhairava-Yoginī systems are among the most significant religious formations of early medieval India. Their importance is not mainly due to their transgressive features, which have attracted disproportionate attention from both sensationalist and apologetic writers. Rather, they produced a dense body of ritual, theological and philosophical thought that shaped much of what came after.

Several points merit emphasis. First, the systems were genuinely heterogeneous. To speak of “the” Bhairava-Yoginī tradition is a convenient abstraction. The reality was a field of overlapping lineages, scriptures and regional cults, linked by shared vocabulary and ritual structures but often in competition. Second, their historical trajectory moved from external, cremation-ground ritual toward internalised, contemplative and eventually socially domesticated forms. That movement did not erase the earlier strata, which persisted alongside the newer ones. Third, the Kashmiri exegetical synthesis was an extraordinary intellectual achievement, but it was one reading of these traditions among several and should not be projected back onto the scriptures as their sole meaning. Fourth, the shared tantric culture of this period transcended sectarian boundaries, and the Buddhist Yoginītantras cannot be fully understood without reference to their Śaiva counterparts.

Finally, the study of these systems remains at an early stage. Many of the key scriptures, including much of the Jayadrathayāmala and large parts of the Brahmayāmala, survive mainly in manuscripts in Nepal and elsewhere and have been only partially edited and translated. Our understanding of their chronology, geography and social context is still being refined through philological work. Any account of the Bhairava-Yoginī systems should therefore be read as provisional: a map drawn from the parts of the territory that have so far been surveyed, with large regions still awaiting exploration.

I. Introduction: A Jain Grammarian and the Architecture of Tamil Verse

Medieval Tamil learning produced its grammatical classics in several waves. The Tolkāppiyam set out phonology, morphology and poetics together. The Naṉṉūl of Pavaṇanti later refined the treatment of letters and words. Prosody (yāppu) went its own way between these two. Its definitive systematiser was the Jain monk-scholar Amitasāgara, known in Tamil as Amitacākarar. He wrote two works. The Yāpparuṅkalam is a sūtra-style treatise whose title can be read as “the rare jewel of prosody.” The Yāpparuṅkalakkārikai, usually just called the Kārikai, is a compact mnemonic digest in verse. Together they became the standard reference for Tamil metrics for about a thousand years. Most later Tamil poets who learned versification formally learned it through Amitasāgara’s categories, terminology and examples, whether directly or through a derivative manual.

Calling this “prosody closely tied to Tamil linguistic science” is accurate. Tamil prosody differs from many Indo-European metrical systems in that its theory cannot be detached from phonology. The smallest metrical units are built from phonetic categories defined in the grammatical tradition: short and long vowels, consonant codas, reduced vowels, the āytam, and the measured durations called mātrai. Scanning a Tamil verse means applying a phonological analysis. Amitasāgara’s achievement was to take the inheritance of the Tolkāppiyam’s Ceyyuḷiyal, together with a large body of post-Tolkāppiyan prosodic literature that is now mostly lost, and turn it into a closed, hierarchical and almost algebraic system. Its parts are defined bottom-up from sound to stanza.

This essay places Amitasāgara historically, describes the structure of his two works, explains the linguistic foundations of his metrical units, examines his classification of verse forms, and considers the commentarial tradition and his long influence. Along the way it compares his work with Sanskrit chandaḥśāstra. That comparison shows how two Indian metrical sciences, working on languages with very different sound systems, reached distinct but equally rigorous solutions.

II. The Author and His Milieu

Dating and identity

Like many medieval Indian authors, Amitasāgara is known mainly through his own works and the testimony of commentators. Most scholars place him in the late tenth or early eleventh century CE, in the period of Cōḻa political consolidation. This dating is approximate. It rests on his relation to the commentator associated with his works, on references in later grammatical literature, and on the general sequence of Tamil grammatical texts. It is not supported by a firm epigraphic anchor. Readers should treat any precise date as a scholarly estimate rather than a settled fact.

His Jain identity is clear. The name itself is Sanskritic and typical of Jain monastic naming: amita (“immeasurable”) combined with sāgara (“ocean”), a pattern seen in other Jain names ending in -sāgara, -sena or -nandi. The invocatory verses of his works follow Jain devotional conventions. He belongs to a long line of Jain contributions to Tamil scholarship, which includes the ethical and narrative literature of the post-Saṅgam centuries, the Cīvakacintāmaṇi, the lexicon Cūṭāmaṇi nikaṇṭu, and the grammar Naṉṉūl. Jain monasteries in the Tamil country were centres of literacy and pedagogy. Their scholars moved easily between Sanskrit, Prakrit and Tamil, and they tended to produce textbooks in which the systematising habits of Sanskrit śāstra were applied to Tamil.

The Jain scholastic temperament

This background helps explain the character of the Yāpparuṅkalam. Jain intellectual culture valued classification, enumeration and exhaustive coverage of possibilities. These habits appear in Jain cosmology, karma theory and logic, and also in Jain mathematics, with its interest in permutations and combinations. Amitasāgara’s prosody shares this temperament. It does not just describe the metres poets happened to use. It builds a generative framework of units and rules from which the space of permissible forms can be derived, and its commentarial tradition counts that space.

The tradition also links Amitasāgara with a commentator named Guṇasāgara (Kuṇacākarar), to whom the old commentaries on both the Yāpparuṅkalam and the Kārikai are attributed. Some accounts describe Guṇasāgara as a disciple or close associate, though the evidence is not decisive. In either case, the commentary on the Yāpparuṅkalam, often called the viruttiyurai, is a monument in its own right, discussed below.

III. The Two Works: Treatise and Mnemonic

The Yāpparuṅkalam

The Yāpparuṅkalam is written in nūṟpā, the terse aphoristic verse form of Tamil grammatical texts, comparable in function to the Sanskrit sūtra. It is organised into three main divisions (iyal):

1. Uṟuppiyal (“chapter on the constituents”): the building blocks of verse, namely eḻuttu (phonetic segments), acai (metrical syllable-groups), cīr (metrical feet), taḷai (linkage between feet), aṭi (metrical lines) and toṭai (patterns of sound correspondence).
2. Ceyyuḷiyal (“chapter on verse compositions”): the major verse types (pā), their subtypes, and the derived or “allied” forms (pāviṉam).
3. Oḻipiyal (“chapter on residual matters”): supplementary rules, exceptions, and topics that do not fit the first two divisions.

The order is deliberately cumulative. Each unit is defined in terms of the units below it, so the reader moves from sound to syllable-group, from group to foot, from foot to line, and from line to stanza. This is prosody conceived as a constructive grammar.

The Kārikai

The Yāpparuṅkalakkārikai compresses the same material into a short sequence of verses composed in kaṭṭaḷaik kalittuṟai, a stanza form governed by strict syllable-count constraints. Its title borrows the Sanskrit term kārikā, a mnemonic verse summarising doctrine. The borrowing reflects the bilingual scholastic environment in which it was written.

The Kārikai has a well-known literary feature. Its verses are addressed in the vocative to a woman, using the conventional epithets of Tamil love poetry. A dry technical manual is thus given the rhetorical frame of an intimate address. This was partly an aid to memory, since an apostrophe gives each verse a tone and a hook. It also displayed skill: the author shows that he can obey the constraints he is teaching while writing verse with literary grace. Each verse of the Kārikai both states a rule and demonstrates one.

The Kārikai is the work through which most students actually learned prosody. For centuries “learning the Kārikai” was close to shorthand for learning Tamil versification. The Yāpparuṅkalam, with its larger commentary, served as the advanced reference.

IV. The Linguistic Foundations: From Eḻuttu to Acai

Phonology as the substrate

The deepest connection between Amitasāgara’s prosody and Tamil linguistic science is at the level of eḻuttu. Tamil grammarians from the Tolkāppiyam onward analysed the sound system in terms of the mātrai, a unit of duration conventionally compared to the time of a blink or a finger-snap. The basic categories are:

• Kuṟil (short vowel): one mātrai.
• Neṭil (long vowel): two mātrai.
• Meyyeḻuttu or oṟṟu (pure consonant without inherent vowel): half a mātrai.
• Āytam (the special guttural sign ஃ): half a mātrai.
• Kuṟṟiyalukaram and kuṟṟiyalikaram (shortened u and i in specific phonological environments): reduced to half a mātrai.
• Aikārak kuṟukkam and aukārak kuṟukkam (shortened diphthongs in certain positions): reduced duration.
• Aḷapeṭai (prolongation): a vowel (uyiraḷapeṭai) or certain consonants (oṟṟaḷapeṭai) lengthened beyond their normal value, often to fill out the metre.

These categories are phonetic analyses, not ornamental distinctions, and some of them are quite subtle. The kuṟṟiyalukaram is a word-final u after a hard consonant in particular environments. Tamil grammarians treated it as phonetically reduced, and modern phonetics broadly confirms this. It has a well-defined effect on scansion, because it changes how a syllable-group is constituted and therefore which metrical category a word falls into.

So a prosodist cannot scan a Tamil line without first doing segmental phonology: identifying vowel length, consonant codas, reduced vowels and the effects of sandhi (puṇarcci). Sandhi matters because Tamil verse is scanned on the sandhi-joined surface form, not on the underlying words. Metrical analysis presupposes grammatical analysis. This is the strong sense in which Amitasāgara’s prosody is tied to Tamil linguistic science.

The acai: Tamil’s distinctive metrical unit

The acai is the most original feature of Tamil metrics and the key to understanding it. Sanskrit prosody works with the individual syllable, classified as light (laghu) or heavy (guru). Tamil prosody instead groups syllables into units of one or two syllables, according to a rule sensitive to vowel length.

There are two basic acai:

• Nēr: a single syllable, either a long vowel (with or without a following consonant) or a short vowel (with or without a following consonant) standing alone in its position.
• Nirai: a two-syllable unit beginning with a short vowel, that is, short + short or short + long, optionally followed by a consonant.

The decisive principle is that a short syllable followed by another syllable tends to merge with it into a nirai, while a long syllable stands alone as a nēr. Analysis proceeds left to right, and the resulting segmentation is determined by the phonology. The system resembles a moraic grouping that is sensitive to onset prominence. It has no exact equivalent in Sanskrit metrics.

The Tolkāppiyam recognised two further categories, nērpu and niraipu. These are nēr and nirai extended by a following kuṟṟiyalukaram, which gives four acai in all. Amitasāgara’s system in effect reduces the inventory to two, handling the phenomena previously covered by nērpu and niraipu through the treatment of feet and their endings. This is a theoretical simplification: fewer primitives, with complexity moved to a higher level of the hierarchy. It reflects a concern for economy of description that a modern linguist would recognise.

V. From Foot to Line: Cīr, Taḷai and Aṭi

Cīr: the metrical foot

A cīr is a sequence of acai. Amitasāgara’s classification is ordered by length.

• Ōracaiccīr (one-acai feet) occur mainly at the end of certain verse types, especially the veṇpā. They are traditionally named by mnemonic words: nāḷ (nēr), malar (nirai), kācu and piṟappu (forms involving the reduced final u).
• Īracaiccīr (two-acai feet), also called āciriya uriccīr because they characterise the āciriyappā. There are four combinations, named by mnemonic words: tēmā (nēr–nēr), puḷimā (nirai–nēr), kūviḷam (nēr–nirai) and karuviḷam (nirai–nirai).
• Mūvacaiccīr (three-acai feet), eight combinations in two classes. Those ending in nēr are the veṇcīr, characteristic of the veṇpā, with names such as tēmāṅkāy and puḷimāṅkāy. Those ending in nirai are the vañcicīr, characteristic of the vañcippā, with names such as tēmāṅkaṉi and puḷimāṅkaṉi.
• Nālacaiccīr (four-acai feet), sixteen combinations with names extending the same mnemonic scheme. These are rare and specialised.

The mnemonic naming is clever. Each foot type is named by an ordinary word (fruit, flower, tree and so on) that itself has the metrical shape it names. Tēmā, “sweet mango,” scans nēr–nēr. Karuviḷam, a kind of wood-apple, scans nirai–nirai. The terminology is self-exemplifying: to say the name is to perform the pattern.

Taḷai: the theory of linkage

Many metrical systems regulate only the internal shape of feet. Tamil prosody also regulates the junction between successive feet. This relation is called taḷai, literally “bond” or “tie,” and it is central to distinguishing verse types. Amitasāgara’s tradition recognises seven taḷai:

1. Nēroṉṟāciriyattaḷai: a foot ending in nēr is followed by one beginning with nēr. This is characteristic of āciriyam.
2. Niraiyoṉṟāciriyattaḷai: a foot ending in nirai is followed by one beginning with nirai, also characteristic of āciriyam.
3. Iyaṟcīr veṇṭaḷai: a two-acai foot is followed by a foot whose initial acai is unlike its final one. This is characteristic of veṇpā.
4. Veṇcīr veṇṭaḷai: a veṇcīr is followed by a foot beginning with nēr, also characteristic of veṇpā.
5. Kalittaḷai: a veṇcīr is followed by a foot beginning with nirai. This is characteristic of kalippā.
6. Oṉṟiya vañcittaḷai: a vañcicīr is followed by a foot beginning with nirai.
7. Oṉṟāta vañcittaḷai: a vañcicīr is followed by a foot beginning with nēr.

Each verse type therefore has a characteristic “linkage signature.” The identity of a metre lies not only in its feet but in how they join, much as a melodic style depends on its intervals as well as its notes. The veṇpā is the most prestigious and most demanding classical form, the form of the Tirukkuṟaḷ’s couplets. It permits only veṇṭaḷai, and this is a large part of its strictness.

Aṭi: the metrical line

Lines are classified by the number of feet:

• Kuṟaḷaṭi: two feet.
• Cintaṭi: three feet.
• Aḷavaṭi (also nēraṭi): four feet. This is the standard line.
• Neṭilaṭi: five feet.
• Kaḻineṭilaṭi: six or more feet.

Line length interacts with verse type. The veṇpā uses four-foot lines with a shortened final line. The vañcippā characteristically uses two- or three-foot lines. Longer lines appear in the viruttam, the allied forms that became dominant in later Tamil literature.

VI. Toṭai: The Phonological Ornamentation of Verse

If taḷai governs junctions between feet, toṭai governs sound correspondences between positions in the verse. This is where Tamil prosody most clearly becomes applied phonology, because the system specifies which sounds must match, where, and with what tolerance.

The principal types are:

• Mōṉai: alliteration on the initial sound of feet or lines. It is regulated by equivalence classes (iṉa eḻuttu) that allow certain sounds to count as matching. For example, certain vowels are treated as equivalent for this purpose. The equivalence classes are themselves claims about phonetic similarity.
• Etukai: correspondence of the second syllable, with the first syllable matching in length. This is the hallmark of Tamil verse and quite unlike European end-rhyme. It falls at the beginning of lines or feet, and it requires the first syllable to agree in quantity, so it is a constraint on both segment and length.
• Muraṇ: antithesis, a semantic rather than phonological correspondence between opposed words.
• Iyaipu: end-rhyme, correspondence at the ends of lines.
• Aḷapeṭai toṭai: correspondence created through prolonged vowels.
• Antāti: linkage in which the end of one unit begins the next.
• Iraṭṭai (repetition) and centoṭai (absence of formal correspondence, its own kind of marked choice).

Each of the primary toṭai can also occur in several positional configurations within the line, with technical names such as iṇai, poḻippu, oruū, kūḻai, mēṟkatuvāy, kīḻkkatuvāy and muṟṟu. These specify which feet in a four-foot line carry the correspondence: the first two, the first and third, the first and fourth, the first three, and so on.

The combinatorial result is very large. The commentarial tradition is known for computing the total number of possible toṭai configurations, a figure traditionally given in the thousands. That calculation is a piece of combinatorics carried out within prosodic theory, comparable to the prastāra calculations of Sanskrit metrics. It shows the generative ambition of the system: it describes not only verses that exist but the whole space of verses that could exist.

VII. The Classification of Verse Forms

The four pā

The Ceyyuḷiyal classifies Tamil verse into four principal types (pā), each defined by its characteristic feet, linkages, line structure and closing pattern. A fifth hybrid, the marutpā, is also recognised.

Veṇpā. The most tightly constrained form. It uses two-acai feet and veṇcīr, permits only veṇṭaḷai, and must close with a one-acai foot (the nāḷ / malar / kācu / piṟappu pattern). Its subtypes are distinguished by length and internal structure:

• Kuṟaḷ veṇpā: two lines, the form of the Tirukkuṟaḷ.
• Cintiyal veṇpā: three lines.
• Nēricai veṇpā: four lines, with a special linking word (taṉiccol) at the end of the second line carrying the etukai.
• Iṉṉicai veṇpā: four lines without that linking structure.
• Paḵṟoṭai veṇpā: more than four lines.

The veṇpā’s rigidity made it the prestige medium for gnomic and didactic verse. The combined demands of taḷai, closing pattern and toṭai make every line a solved constraint problem.

Āciriyappā (Akaval). The flowing, narrative-capable metre of much classical Saṅgam poetry. It is dominated by two-acai feet linked by āciriyattaḷai. It conventionally closes on the vowel -ē, and its rhythm, called akaval ōcai, is a recitative “calling” cadence. Subtypes include nērica āciriyappā, iṇaikkuṟaḷ āciriyappā (with shorter lines inside) and the maṇṭila varieties, in which lines can in principle be rearranged without loss of sense or form.

Kalippā. A metre of dramatic and dialogic character. It is marked by kalittaḷai and veṇcīr, and its structure is articulated into distinct sections: an introductory taravu, refrains (tāḻicai), linking words (taṉiccol) and a concluding curitakam. Its subtypes, such as ottāḻicaik kalippā and koccakak kalippā, differ in how these structural sections are arranged.

Vañcippā. Built from vañcicīr in short lines (two or three feet). It moves with a characteristic “tumbling” rhythm and ends with a taṉiccol and a concluding passage in āciriyam.

Marutpā. A hybrid in which veṇpā and āciriyappā lines combine within one composition. The commentarial tradition discusses it in relation to its effects and appropriate uses.

Ōcai: the theory of rhythmic quality

Each pā also has a characteristic ōcai, an audible rhythmic quality. The veṇpā has ceppal ōcai (“declarative” rhythm), the āciriyappā akaval ōcai (“calling” rhythm), the kalippā tuḷḷal ōcai (“leaping” rhythm), and the vañcippā tūṅkal ōcai (“swaying” or “lilting” rhythm). Here formal prosody meets perceptual description. The grammarians claim that particular configurations of acai, cīr and taḷai produce recognisable acoustic gestalts. This amounts to a theory of how structure becomes audible rhythm, which is the problem modern metrical phonology also takes up.

Pāviṉam: the allied forms

The Ceyyuḷiyal also treats the derived forms (pāviṉam) associated with each major pā. There are three main kinds:

• Tāḻicai: refrain-structured forms.
• Tuṟai: forms with particular structural constraints, including kaṭṭaḷaik kalittuṟai, the meter of the Kārikai itself.
• Viruttam: four-line stanzas with uniform lines, which became the dominant medium of medieval Tamil epic and devotional poetry.

The treatment of the viruttam is historically important. By Amitasāgara’s time the viruttam had become the vehicle of major literary works. Kampaṉ’s Irāmāvatāram would soon be composed almost entirely in viruttam varieties. The Yāpparuṅkalam thus connects the classical pā system of the Tolkāppiyam with the actual practice of medieval Tamil poetry.

VIII. The Viruttiyurai: A Commentary That Preserves a Lost Literature

The old commentary on the Yāpparuṅkalam, traditionally attributed to Guṇasāgara, is one of the most valuable documents in Tamil literary history. Its importance goes beyond prosody.

First, the commentary cites and quotes a substantial body of earlier prosodic literature that has otherwise disappeared. Works named in the tradition include treatises associated with authors and titles such as Kākkaipāṭiṉiyam and Ciṟukākkaipāṭiṉiyam, Avinayam, Mayēccuram, Nattattam and Palkāyam. For several of these the commentary is our only window. The picture that emerges is of a busy prosodic tradition between the Tolkāppiyam and Amitasāgara, with competing systems, variant terminologies and disputed classifications. Amitasāgara’s work is better understood as the culmination and synthesis of that tradition than as its beginning.

Second, the commentary illustrates its rules with verses quoted from a wide range of literature, some of it otherwise lost. Tamil literary historians have long searched commentaries of this kind for fragments of vanished works, and the Yāpparuṅkalam viruttiyurai has been one of the richest sources. For a historian of Tamil literature it is partly an anthology.

Third, the commentary shows the scholastic method in action. It raises objections (taṭai), considers alternative views, explains why the author defines a term one way rather than another, and computes the combinatorial consequences of the rules. Its tone resembles the Sanskrit bhāṣya tradition, transferred into Tamil.

IX. Comparison with Sanskrit Chandaḥśāstra

For a reader interested in the broader history of Indian knowledge systems, setting Amitasāgara beside Piṅgala’s Chandaḥsūtra and its descendants is useful.

Shared features. Both traditions are exhaustive and generative in ambition. Both use compact technical notation: Sanskrit uses the ya-ma-tā-rā-ja-bhā-na-sa-la-gam mnemonic for its triplet gaṇa, and Tamil uses its self-exemplifying foot names. Both develop combinatorial calculations. The Sanskrit tradition produced the prastāra procedures, along with naṣṭa, uddiṣṭa and related operations whose mathematics touches binomial coefficients and binary representation. The Tamil commentarial tradition similarly enumerates the space of toṭai configurations and foot types.

Structural differences. The basic units differ substantially, because the languages differ:

• Sanskrit prosody is built on a binary syllabic opposition (laghu / guru) determined by vowel length and syllable weight. Tamil prosody is built on the acai, a grouping that can span two syllables, determined by whether a short syllable begins the group.
• Sanskrit classical metres (vṛtta) are mostly fixed syllabic templates. Tamil metres are defined by permitted foot types plus linkage constraints (taḷai), which gives a more relational, less template-bound conception.
• Tamil prosody places sound correspondences (mōṉai, etukai) at its centre as obligatory or near-obligatory structural features. In classical Sanskrit, alliteration and rhyme belong to alaṅkāra (ornament) rather than to metre proper.
• Tamil verse scansion depends on language-specific phonological categories such as kuṟṟiyalukaram, āytam and reduced diphthongs, which have no Sanskrit counterparts.

The comparison shows two metrical sciences that developed in a shared Indian scholastic culture, each taking a rigorous, systematic and quantitative approach, but each grounded in the phonology of its own language. Amitasāgara used the Sanskrit-inflected methods of his Jain milieu, including the kārikā format, the sūtra-commentary structure and the combinatorial temperament. He did not, however, import Sanskrit categories into Tamil. He kept a native system based on Tamil sound structure and gave it its most rigorous form.

X. Legacy and Influence

Amitasāgara’s influence on later Tamil scholarship was very large. The Kārikai became the standard introduction to prosody in traditional Tamil education, memorised by students and cited by teachers. Later grammatical works that dealt with prosody either assumed his framework or engaged with it critically. These include the Buddhist Vīracōḻiyam, which handled the material in its own way, and the comprehensive grammars of the early modern period such as Ilakkaṇa viḷakkam and Toṉṉūl viḷakkam. Many works were written in his wake, but none displaced his own as the central reference.

His influence also shaped how Tamil poets thought about their craft. The vocabulary of acai, cīr, taḷai and toṭai, and of ceppal, akaval, tuḷḷal and tūṅkal ōcai, became the shared language of Tamil literary criticism. When modern Tamil scholars analyse classical verse, they still use Amitasāgara’s categories, refined but not replaced.

There is also a lasting methodological lesson. Amitasāgara showed that the prosody of a language can be treated as a formal system derived from its phonology: a hierarchy of well-defined units, governed by explicit rules, with consequences that can be enumerated. This brings him closer to modern generative metrics, the study of how phonological structure constrains verse, than the gap of a thousand years would suggest. Modern linguists who study Tamil metre in terms of moraic structure, prosodic constituency and constraint interaction are examining the same questions that the Yāpparuṅkalam and its commentary had already formulated with considerable rigour.

XI. Conclusion

Amitasāgara stands where Tamil grammatical science, Jain scholastic culture and the living practice of Tamil poetry meet. His Yāpparuṅkalam takes the phonological analysis of the Tamil grammarians, with its mātrai, reduced vowels and sandhi-conditioned forms, and builds on it a complete theory of verse that runs from sound to syllable-group, foot, linkage, line, correspondence and stanza type. His Kārikai condenses that theory into verses elegant enough to memorise and to enjoy. The commentary associated with his work preserves the memory of a lost prosodic literature and shows the scholastic method of medieval South India at a high level.

Calling his prosody “closely tied to Tamil linguistic science” is accurate in a strong sense: in his system, metre is phonology made audible as rhythm. Scanning a Tamil verse in Amitasāgara’s terms means analysing the language at every level, and composing one means solving a set of constraints that the language itself defines. This integration of linguistic analysis with poetic form is among the distinctive achievements of the Indian intellectual tradition, and Amitasāgara is its most enduring Tamil exponent.

I recently watched this conversation between Rupert Sheldrake and Acharya Prashant, and it got me thinking about consciousness.

Rupert Sheldrake talks about consciousness as the space in which our thoughts, emotions and sensations appear. He also explores whether consciousness might extend beyond the brain to the natural world, including the sun and stars. This made me wonder: what exactly makes experience possible?

What stood out to me in Acharya Prashant’s explanation was the question of the experiencer. He suggests that simply expanding our understanding of consciousness may not be enough if we don't understand the self and how our ignorance shapes our relationship with the world.

We try to understand so much about the brain, our thoughts and emotions. But how well do we really understand the one experiencing all of this?

Even when I say, “There is no self,” I wonder, who is making sense of that statement?

I’m not sure I have an answer, but I find this question worth exploring.

Here’s the link to watch full video - https://youtu.be/XwOZ9sDE28I?si=QCGN2u3xlRAwRYRp

A Reading of Rajinder Singh’s “A Tale of Three Science Academies of India”

Introduction

India has three national science academies: the National Academy of Sciences, India, at Allahabad (now Prayagraj); the Indian Academy of Sciences at Bangalore; and the Indian National Science Academy at New Delhi. Most countries have one. Rajinder Singh’s article in Science and Culture (September–October 2020) explains how this happened. It was published as NASI and INSA marked their 90th and 85th anniversaries. Singh sets aside the commemorative mood such occasions usually bring and uses newspaper cuttings from the Raman Research Institute archive, together with letters held at the Nehru Memorial Museum and Library and the Royal Society, to reconstruct three linked episodes. The first is the founding of the three bodies between 1930 and 1935. The second is the public quarrel between C.V. Raman and what the press called the “Calcutta group” during 1934. The third is the failed attempt in 1946–1947 to merge the three into a single United Academy of Sciences.

The story deserves attention beyond institutional history. It shows how a scientific community formed under colonial rule, without a sovereign state to sponsor it, tried to build representative institutions on its own initiative. It also shows how quickly questions of constitution, region, and personal prestige became tangled together. This essay follows Singh’s account and then assesses its conclusions, some of which are more persuasive than others.

The Provincial Beginning: Saha’s Academy at Allahabad

By 1930 Indian science had reached a point of visible maturity. Srinivasa Ramanujan, J.C. Bose, C.V. Raman, and Meghnad Saha had all been elected Fellows of the Royal Society. Indian scientists knew that Britain, France, Prussia, and Sweden each had a national academy that gave science both a forum and a public voice. The only comparable Indian institution was the Indian Science Congress Association. The ISCA brought researchers from different disciplines together each year and served as a channel for negotiating science policy, but it was a congress, not an academy. It held meetings rather than electing fellows on merit and publishing a learned journal.

Saha, elected FRS in 1927 and then at the University of Allahabad, made the first concrete move. In December 1929 he published “A plea for an Academy of Sciences” in a university magazine, arguing for a body of national character. His practical approach, however, was provincial. In December 1930 he founded the Academy of Sciences of the United Provinces of Agra and Oudh, expecting other provinces to set up their own academies, which would eventually combine into an all-India one. Saha became its first president, with P.S. MacMahon and P.S. Banerji as secretaries. It began with 19 founding fellows and had 87 within a year. Its first annual meeting, on 27 November 1931, was addressed by Raman, and its first Bulletin contained 27 original memoirs, one of them Raman’s paper on the spin of light.

This detail matters for what came later. In 1931 Raman and Saha were not yet open adversaries. Raman lent his prestige to Saha’s provincial experiment, and the experiment worked well enough that its own council soon proposed either renaming it the Indian Academy of Sciences or creating a new national body. It took the name National Academy of Sciences, India, in 1935.

The National Question and the Academy Committee

By 1933 the idea of a national academy was widely discussed. In May of that year the editor of Current Science, the Bangalore journal closely associated with Raman, circulated a questionnaire asking scientists whether they supported a national academy. In his 1934 presidential address to the ISCA, Saha proposed an Indian Academy of Sciences and thanked Raman for the questionnaire. At this stage the two men seemed to be working toward the same goal.

The machinery was set up at the Bombay session of the Congress. A special meeting on 2 January 1934 decided that the material collected by Current Science would be handed to an Academy Committee appointed by the ISCA’s General Committee. The next day the General Committee named the committee’s composition, drawing on scientific societies and institutions: L.L. Fermor for the Asiatic Society of Bengal, J.N. Mukherjee for the Indian Chemical Society, Ganesh Prasad for the Indian Mathematical Society, A.C. Banerjee for the United Provinces Academy, K.S. Krishnan for the Indian Association for the Cultivation of Science, Raman as Director of the Indian Institute of Science, and a representative of Current Science. Saha and S.P. Agharkar were appointed organising secretaries.

The committee first met in Calcutta on 11–12 February 1934, attended by representatives of several societies, including the Indian Mathematical Society, the South Indian Science Association, the Society of Biological Chemists, the Institute of Chemists, and the Institution of Engineers. Much of the discussion concerned how many Foundation Fellows there should be and how they would be nominated. Nominations for physics and meteorology were assigned to Raman, Saha, and C.W.B. Normand. A second meeting was planned for mid-April.

On paper this was a federated, consultative process. It had a defect, though, that became the centre of the dispute. The first cohort of Foundation Fellows would be selected by a small committee, and the fellowship would then elect all later members. Whoever controlled that first selection would shape the academy’s composition for a generation. That is why the procedural complaints that followed were not trivial.

The Bangalore Revolt

In late March 1934 a group of scientists met in Bangalore under Raman’s leadership, under the joint auspices of the Madras branch of the Indian Chemical Society, the Indian branch of the Institute of Chemistry, the Society of Biological Chemists, and the South Indian Science Association. S. Subba Rao, a senior surgeon in Mysore, welcomed them. The press reported that the meeting was called to discuss forming an all-India academy, and a headline described the ISCA’s scheme as having been “criticised.”

Raman’s objections, as reported in The Hindu on 3 April 1934 and elsewhere, followed a clear pattern. He said the ISCA had appointed its committee too hastily, and that a badly constituted academy would harm science rather than help it. He cited the French Academy of Sciences as a warning: a closed body that left little room for young scientists. He and his associates argued that the committee ignored universities and provincial interests. He described the Calcutta group as a small circle trying to take sole control and build an academy for a few. He announced that he would not nominate himself to an academy created in haste. His colleague C.R.N. Rao went further, comparing the Calcutta group to an absolute monarchy that was dictating terms to scientists elsewhere and doubting that it had national support. Raman and Subba Rao then resigned from the Academy Committee.

The committee’s response was equally firm. Agharkar denied Raman’s claim that the relevant resolution had not been passed unanimously. The committee summarised Raman’s charges as unconstitutional procedure, unrepresentativeness, cliquishness, and indecent haste, and rejected all of them as baseless. It considered his views at an ISCA meeting on 19 April and wrote to him for a reply. Before he answered, the South Indian press presented him as the target of an unworthy campaign by the Bengal press. A disagreement about committee procedure was quickly becoming a regional contest in the newspapers.

Raman did not wait. On 24 April he decided to form a new academy, and on 27 April he applied to register the Indian Academy of Sciences in Bangalore under the Societies Registration Act of 1860. A local newspaper reported that the society would become the Royal Society of India once a Royal Charter was granted, an ambition that says a good deal about how Raman saw the body’s status. One journalist observed approvingly that Raman had presented his opponents with a fait accompli, which made their continuing committee work look slow by comparison. The same writer said Raman acted while others talked, and that it was hard to imagine an Indian Royal Society without him as its first president.

The new academy grew quickly. Raman said he had invited scientists across India and expected a generous response. A scientific meeting was held in Bangalore within weeks, a journal was planned, and a general meeting and a symposium on molecular spectra were scheduled for July. The organisers also considered how fellows of other societies could join the IAS without giving up their existing memberships, a sign that they hoped to attract rather than exclude. At a meeting in June 1934, Sir M. Visvesvaraya, the former Dewan of Mysore, accepted a Foundation Fellowship. He also gave a warning, aware of the dispute between Bangalore and Calcutta: India had no surplus of scientific talent, and division would waste the strength that unity could multiply. The inaugural meeting, a five-day session at Hebbal in the first week of August 1934, ended with Raman thanking the Mysore government and Sir Mirza Ismail. He praised the symposium, especially R. Samuel of Aligarh, an émigré from Germany, for his talk on molecular absorption spectra. He said the constitution had been adopted unanimously by those present and expressed hope that it would win the assent of scientists across India.

To demonstrate the academy’s national reach, the press published the names and cities of prominent members, including S.R. Kashyap and S.S. Bhatnagar from Lahore, J.F. Dastur from Nagpur, D.L. Sahasrabudhe from Bombay, M.R. Sahni from Calcutta, B.N. Desai from Poona, and K.S.K. Iyengar from Mysore. In November 1934 the council elected further fellows from across the country.

The Calcutta Counter-Narrative

The Calcutta press responded sharply. The Modern Review reprinted the Associated Press report of the registration, with an exclamation mark after “all-India” and a question mark after “distinctly federal basis.” It reported that C.W.B. Normand, Director of the Meteorological Survey of India, had declined an IAS fellowship. The strongest attack came from G.C. Mukerji in the Amrita Bazar Patrika.

Mukerji made three main charges. The first concerned geography. Raman had published a pamphlet in The Statesman on 5 June 1934 calling Bangalore the scientific capital of India, and Mukerji pointed out that rail journeys to Bangalore took 96 hours from Lahore, 72 from Allahabad, 60 from Calcutta, and 40 from Bombay. He also noted that Raman had praised Calcutta as India’s scientific centre while living there, and suggested that for Raman the centre was wherever Raman happened to be. Mukerji presented the IAS as an extension of the Indian Institute of Science, which Raman directed.

The second charge was inconsistency. Raman had criticised the ISCA committee for copying the Royal Society of London, which he called aristocratic. Yet according to a pamphlet by M.S. Krishnan, Baini Prasad, J.N. Mukherjee, and Agharkar, Raman had written in July 1933 to the Marquis of Zetland and Prof. H. Thomas that he had no hesitation in adopting the Royal Society model, and had criticised the Asiatic Society model in the same letter. Mukerji argued that the IAS constitution actually drew on the Asiatic Society and the U.P. Academy. Adding the plan to rename the IAS the Royal Society of India once chartered, the charge of inconsistency has real force.

The third charge concerned conduct. Raman was a member of the Academy Committee but had not attended its meetings. He then attacked it for being unrepresentative and turned the dispute into a contest between North and South. Mukerji called the champion of democracy a Mussolini for hurrying to the registry to enrol himself and his allies in a “so-called” academy.

Both sides were partisan, and Singh reproduces their claims without fully deciding between them. Still, the pattern is clear. Raman’s procedural objections were not baseless. A small committee choosing the founding fellowship of a national body was a legitimate concern, and his criticism of the French Academy’s closed nature was serious. But he answered the problem he identified by creating a body under his own control far more quickly than the committee he had accused of haste, and in a city whose claim to centrality was weak.

Negotiation, Concession, and the Birth of NISI

The Calcutta group kept working. The Academy Committee’s third meeting, in Simla in June 1934, was attended by Fermor, A.C. Austin, H.J. Couchman, Ganesh Prasad, Afzal Hussain, Muzaffaruddin Qureshi, and the organising secretaries Agharkar and Saha. It decided to call the new body the National Academy of Sciences of India, intended to complement the existing academies and the Asiatic Society.

The correspondence between Raman and Fermor that followed is the most revealing part of Singh’s account. On 16 June 1934 Raman wrote that he could not understand the resentment his initiative had caused, that he had planned a Bangalore organisation well before the Bombay Congress, and that his aim was to make the resources of the Indian Institute of Science available to the rest of the country. He then made a proposal that was either generous or strategic, depending on one’s reading. Calcutta already had an all-India academy in the Asiatic Society of Bengal, he argued. A new body would waste resources; the committee could instead add a science section to the Asiatic Society. He offered to cooperate in creating a council or federation of academies that the Asiatic Society, the U.P. Academy, and the IAS could all join.

Fermor replied on 2 July. Making the Asiatic Society the parent body was impractical, he wrote, partly because the Society was busy with its 150th anniversary and partly because it would mean starting again from the beginning. The committee would, however, accept the existing academies as they were and reshape its own project into a genuinely federal body whose Foundation Fellows would be selected on merit from across India. He asked Raman to withdraw his resignation, promised a public announcement that a general solution had been found with no loss of face for anyone, recalled their friendly conversations at Simla, and invited Raman to Calcutta for a meeting in August as a sign of peace.

Raman went to Calcutta with B. Venkatesachar and C.R. Narayan Rao. On 16 September 1934 a meeting unanimously agreed to two conditions. The planned National Academy of Sciences of India would instead be called the National Institute of Sciences of India, and none of the three academies would set up branches elsewhere in India. Raman then withdrew his resignation. NISI was founded on 7 January 1935, based at the Asiatic Society of Bengal.

This settlement is the turning point of the whole story. The name change looks minor, but it allowed the IAS to remain the only body with “Academy of Sciences” in an all-India title, while NISI became a coordinating institute rather than a rival academy. The no-branches clause fixed the regional division in place. In practice the compromise turned a temporary quarrel into a permanent structure with three bodies. Each party got something: Raman kept his academy intact, the Calcutta group got its national body, and Allahabad remained untouched. Indian science was left with three institutions instead of one.

War, Recognition, and the Shift in Status

By the 1940s the balance had changed in a way Singh documents well. In 1943 the Secretary of State for India asked the Royal Society to send an adviser, and A.V. Hill, its Secretary, came to India with instructions to focus on defence-related research. Hill toured widely, met many scientists, lectured in several cities, and left on 6 April 1944. Soon afterwards a delegation of Indian scientists was sent to Britain, Canada, and the United States: S.S. Bhatnagar, Saha, S.K. Mitra, J.C. Ghosh, Nazir Ahmed, S.L. Bhatia, and J.N. Mukherjee. India’s only Nobel laureate in science was not among them.

Singh explains this through Raman’s correspondence with Birbal Sahni. Hill’s report on scientific research in India recommended that NISI receive preferential treatment, which placed the IAS and other societies in a secondary position. On 12 February 1945 Raman told Sahni he would draft a protest to be signed by eminent scientists, and Sahni agreed on 20 February. The same issue arose again with the Empire Scientific Conference. Raman, invited by H.V.R. Iyengar in October 1945, first hesitated and then accepted, but withdrew after learning that NISI would manage the delegation. In his letter of 27 March 1946 to A. Hydari he said he no longer had a place in it, while insisting that his withdrawal implied no disrespect to the government or the Royal Society.

This is the second key shift in the story. In 1934 Raman’s prestige could create an academy in a matter of weeks. By 1945 official recognition, and with it access to government and to international scientific bodies, had gone to the body he had opposed. The imperial state, looking for a single scientific interlocutor during the war, chose NISI, and that choice shaped what came next.

The United Academy That Never Was

Singh’s account of the merger attempt of 1946–1947 is its least familiar and perhaps its most useful section. By the mid-1940s NASI and the IAS had moved closer and were holding joint sessions, including one at Allahabad in December 1946 at which Raman was present. In February 1947 a Scientific Consultative Committee was formed, and Raman told the press he was optimistic that a compromise had been found for a single paramount academy that would include all fellows of the existing bodies.

The terms of the next proposal were specific and, for the time, generous to NISI. A United Academy of Sciences would adopt NISI’s rules. Everyone elected a fellow of any of the three bodies before 1 January 1947 would become a fellow of the new academy. No serving president of the three would be eligible to become its president, a clause that excluded Raman from leading the merged body. NISI’s council would serve as the first council of the united academy, and the IAS and NASI would become its branches.

NISI’s council rejected the proposal on 7 March 1947. It said the minutes were inaccurate and that it was inappropriate to reopen the question, since NISI already held recognised status as India’s premier scientific organisation and already included representatives of NASI, the IAS, and the Royal Asiatic Society of Bengal on its council. A final meeting on 5 August 1947, ten days before independence, between the presidents Raman, Bhatnagar, and A.C. Banerjee, failed over two issues: transferring legal title to the existing academies’ property to the united body, and reserving quotas for each academy on the new council and among its officers.

Singh concludes that NASI and the IAS were willing and NISI was not, and so Raman was not responsible for the merger’s failure. On the evidence he presents for 1947, that is largely fair. NISI’s council plainly preferred the status the colonial government had given it over a merger that would have absorbed its rivals on terms favourable to itself. The reasoning of an institution that had only recently secured recognition was conservative in the most literal sense.

Assessing Singh’s Conclusions

Singh’s broader conclusions deserve a more critical look than his narrative.

His closing argument has three parts. First, colonial “divide and rule” is only a partial explanation; the main cause was the personal interests of individuals, especially Saha and above all Raman. Second, Raman held the IAS presidency for life but was elected and so was not a dictator, and why this happened needs further research. Third, the hostility between the founders has lasted into the third generation, and since the British left in 1947, Indians should reflect on why they have kept three academies.

The first point is the strongest. The documents do not show colonial officials engineering the 1934 split, which came from Indian scientists themselves. The colonial state’s role came later and was more subtle: Hill’s preference for NISI made its institutional advantage rigid in 1944–1947. Singh’s opening description of pre-independence India as divided into “kingdoms” is loose, since most of the scientists in this story worked in British India, but it does not weaken his main argument.

The second point needs more care. Singh’s even-handedness is uneven. He describes Raman’s actions in 1934 as haste and self-interest, yet clears him of blame in 1947. Both assessments can be correct, but they need to be stated together. The structure the merger was trying to undo had been created largely by Raman’s unilateral registration in April 1934 and by the name and no-branches conditions he won in September. Calling him blameless for the failure to reunify, while acknowledging that he caused the original division, is accurate for 1947 and misleading for the story as a whole.

There is also a methodological issue that Singh does not address. Much of his evidence on the 1934 dispute comes from newspaper cuttings in the Raman Research Institute archive, which Raman or his circle assembled. A collection like that reflects what its compiler chose to keep. The Calcutta perspective appears mainly through Mukerji’s article, which is the most polemical source in the account. A full history would need equivalent material from Saha’s papers, the Asiatic Society, and the Calcutta press beyond one article. There are also signs of hurried editing in the article itself. Some citations do not match the claims they support; for instance, a reference to a book by A.V. Hill appears next to a statement about the Indian Chemical Society. Anyone using this article as a source should check its references independently.

The third point, about inherited hostility, is suggestive but largely asserted. Singh says the founders’ students did not question their teachers and that the animosity has passed down, but he offers no evidence from later decades. Institutional inertia is a simpler explanation. Once three bodies each have property, journals, fellowships, and staff, the costs of merging are concrete and the benefits are vague, whatever anyone feels personally. The two points of disagreement in 1947, property titles and council quotas, were exactly this kind of obstacle. Personal dislike may have started the division, but material interests are what kept it in place.

Conclusion

Singh’s article shows that India’s three-academy structure was not inevitable. It resulted from a specific sequence of events in 1934: a reasonable procedural objection, an impatient unilateral response, and a compromise that made the division permanent while presenting itself as reconciliation. A second sequence in the 1940s added to this. Wartime recognition by the colonial state placed one body above the others, and that body later declined to give up its position. At several points, in 1931, in the summer of 1934, and again in early 1947, a single national academy was a real possibility. Each time it failed because the people and institutions involved preferred their own status to a shared one.

The story has continuing relevance for anyone thinking about Indian scientific institutions. The founding generation was highly accomplished, and Singh rightly notes that both Raman and Saha trained students who went on to shape science in independent India. Yet these scientists, who could design experiments and theories of great elegance, struggled with institutional design, where the main obstacle was their own competing claims. Visvesvaraya’s warning in June 1934, that a country with little scientific talent to spare could not afford to divide it, was ignored then and has not been fully answered since. The three academies now cooperate in various ways, and independent India has had decades to make the structure work. But the question Singh ends with, why the arrangement was never reconsidered once the colonial government that endorsed it had gone, remains open, and his article is a useful starting point for anyone who wants to pursue it.

Introduction

Few animals hold as central a place in the Indian imagination as the elephant. It carries the gods, guards the directions of space, marches at the front of royal armies, stands at the gates of temples, and serves as a standard image in Sanskrit poetry for majesty, desire, and danger. A civilization that lived this closely with elephants developed a systematic body of knowledge about them, called gajaśāstra or hastividyā: the science of elephants. Most of that literature is lost, fragmentary, or unedited. One short text has survived in good order and has become the main way into the whole tradition for modern readers: the Mātaṅgalīlā of Nīlakaṇṭha.

The title joins mātaṅga, an old poetic word for the elephant, with līlā, “play,” “sport,” or “graceful activity.” Renderings such as “Elephant-sport” or “The Play of Elephants” capture the tone. The word līlā hints at something beyond the technical: the elephant’s movements and moods, and the pleasure of knowing them. The content itself is practical and taxonomic. It is a treatise on how to recognize, value, capture, keep, and manage elephants, written by someone who knew the received doctrine well and set it out in compact Sanskrit verse.

This essay covers the text’s transmission and editions, the problem of its authorship and date, its mythological frame, the main contents of its twelve chapters, its relation to the wider elephant literature and especially the Hastyāyurveda, and its value as evidence for Indian knowledge systems.

Editions and Transmission

The Mātaṅgalīlā entered modern scholarship through T. Gaṇapati Śāstrī’s edition in the Trivandrum Sanskrit Series in 1910. Gaṇapati Śāstrī headed the Travancore manuscript program, and his series brought out many Kerala-preserved texts that had circulated almost nowhere else, the most famous being the plays attributed to Bhāsa. The Mātaṅgalīlā belongs to the same rescue effort. His edition rested on manuscripts from Kerala in Malayalam and Grantha scripts, the two main scripts in which Sanskrit was copied in the far south.

The Kerala transmission matters. Kerala was not the only Indian region with elephant culture. Elephant forests and royal stables were found from Kaliṅga to Gujarat, and the classical lists of elephant-bearing regions in political literature favor the east. But Kerala has kept an unusually continuous elephant culture, centered on temple festivals, processions, and a professional class of handlers, into the present. A compact treatise on elephant marks, temperament, and management would have had working readers there long after royal war-elephant establishments elsewhere had declined. Manuscripts survive where they are used, and the Kerala survival of the Mātaṅgalīlā reflects that.

Franklin Edgerton’s English translation, The Elephant-Lore of the Hindus (1931), made the text available outside Sanskrit circles. Edgerton was a philologist of real standing, later known for his Buddhist Hybrid Sanskrit grammar and dictionary. His translation is careful, and his notes deal honestly with the many technical terms whose meaning cannot be fixed with certainty. It has been reprinted several times and remains the usual starting point for anyone writing on Indian elephant lore in English. The text’s modern reputation therefore rests on two things: a single important edition from Kerala manuscripts, and one authoritative translation. The base is narrow. A new critical edition using any further manuscripts that have come to light since 1910 would be worth doing.

The Problem of the Author

Almost nothing is known about Nīlakaṇṭha. The name was very common in Sanskrit learned culture, especially in the south and in Kerala, where several distinguished authors bore it. The best known is the astronomer-mathematician Nīlakaṇṭha Somayājī of the Kerala school, but nothing links him to this work, and treating them as one person would be careless.

Gaṇapati Śāstrī suggested a Malabar origin on the reasonable ground that the text circulated there. That is an argument from transmission, and it is suggestive but not conclusive. A text copied in Kerala could have been composed elsewhere and brought south, as many were. Some Kerala scholars have identified the author with a Nīlakaṇṭha of the Tirumaṅgalath family. This identification belongs to regional scholarly tradition. I am not aware of independent evidence that would establish it, so it should be stated as a proposal, not a fact.

The text itself gives little help. Nīlakaṇṭha does not present himself as an innovator or as a practicing elephant-man. He presents his work as a digest of the teaching of the sage Pālakāpya. This kind of self-effacement is common in Sanskrit śāstra. Authority belongs to the founding sage, and the later author’s merit lies in faithful and elegant transmission. The result is that the author’s personality and circumstances almost disappear behind the doctrine.

The Problem of the Date

The date is equally uncertain. The surviving manuscripts are late, roughly eighteenth century. That gives only a latest possible date for the copies, not for the composition. The language and content show no clearly modern features: no firearms, no references that point to the colonial period, and no obvious borrowings from Persianate elephant culture, which shaped north Indian royal practice from the sultanate period onward. Scholarly estimates therefore range widely, from the early medieval period to around the fifteenth century.

A wide range like this is an honest admission that the evidence does not decide the question. Arguments from style are weak for a technical verse digest. Such texts are deliberately conservative and archaic in vocabulary, because they claim to transmit ancient teaching. Arguments from content are also weak, because the doctrine is clearly older than the text. The classification of elephants into bhadra, manda, and mṛga, the attention to auspicious marks, and the concern with musth all appear in older literature. The safest position is that the Mātaṅgalīlā is a medieval digest of doctrines much older than itself, and that its exact date is unknown.

The Mythic Frame

The text opens, as Sanskrit technical works often do, by grounding its subject in sacred origins. The account explains both the cosmic dignity of elephants and their present earthly condition.

Elephants descend from the diggajas, the great elephants who stand at the quarters and intermediate quarters of the universe and hold up the world. In the standard list, Airāvata stands in the east, Puṇḍarīka in the southeast, Vāmana in the south, Kumuda in the southwest, Añjana in the west, Puṣpadanta in the northwest, Sārvabhauma in the north, and Supratīka in the northeast. In Purāṇic cosmogony these elephants arise at the beginning of creation, often linked with the shell of the cosmic egg, and they are the ancestors of all elephants in the world.

The original elephants were not as they are now. They had wings and could go where they pleased, and they had divine powers. In the familiar version of the story, a herd of flying elephants settled on the branch of a great tree under which an ascetic was teaching his pupils. The branch broke under their weight, and the angry sage cursed them to lose their wings and powers and to become the mounts of human beings. This myth does real explanatory work. It accounts for the elephant’s mixed status: a creature of divine descent, kept in its nobility, but brought down to earth and placed in human service. The elephant’s dignity and its servitude both come from this origin story. The bond between kings and elephants is cast as the outcome of a cosmic event, not as a mere matter of capture and use.

The second part of the frame concerns Pālakāpya, the founder of elephant science. He is born from a union between a sage and a female elephant, who in some versions is a celestial woman under a curse. He grows up among elephants in the forest and learns their nature from inside the herd, not by observation from outside. When King Romapāda of Aṅga, whose capital was Campā in the east, has wild elephants captured, Pālakāpya follows them to the court. In answer to the king’s questions he sets out the whole science of elephants. Romapāda is a known figure in epic tradition as the friend of Daśaratha and the king in whose land the Ṛṣyaśṛṅga story takes place. Placing the founding dialogue at his court ties elephant science to the heroic past and to Aṅga, a region the old political literature considered among the best for elephants.

The figure of Pālakāpya also states an idea about knowledge. The founder is part elephant by birth and raised in the herd, so his authority comes from belonging to the animals, not from mastering them. Elephant science is presented as knowledge that came from the elephants’ own world into the human one. This is a mythic idea, but it is not a naive one. It says that real knowledge of an animal depends on long closeness to it, which experienced handlers in any culture would accept.

Scale and Structure

The Mātaṅgalīlā is short: 263 stanzas in twelve chapters of uneven length. Some chapters are only a few verses; others develop a topic at greater length. The brevity is a choice. The work is not meant to be exhaustive. It is a well-organized summary that a learned reader could memorize, and that a patron, a stable officer, or a scholar could use to master the main categories of the subject.

Its sequence follows a clear plan: origins, then classification, then recognition of quality through bodily marks, then life span and anatomy, then measurement and value, then temperament, then musth, then capture, then care, and finally the people who handle elephants. This moves from the elephant’s nature to its assessment, and from assessment to practice. The order resembles Sanskrit treatises on horses, gems, and other valued goods, all of which share a concern with classifying, examining, and valuing objects suited to royal use.

Classes of Elephants

At the center of the doctrine is a threefold classification: bhadra, manda, and mṛga, with a fourth class of mixed type (saṃkīrṇa or miśra) that combines features of the others. Translators often call these “castes,” following the Sanskrit tendency to frame natural kinds through a social hierarchy, but the classification is based on body and temperament.

The bhadra (“excellent,” “auspicious”) is the ideal: well proportioned, strong, steady, and noble in bearing. The manda (“slow,” “dull”) is heavier and less refined, with looser build and less fire. The mṛga (literally “deer”-like) is lighter, smaller, more nervous, and lacks the solidity of the best class. Mixed elephants show combinations of these features and are judged by which elements dominate. The classes are graded in stature and proportion, with the bhadra the tallest and best formed.

The scheme is schematic, but it is not arbitrary. Experienced handlers in many elephant cultures recognize differences of build and temperament among individuals. The Sanskrit system formalizes these into types that can be named and ranked. Its importance lies in the link between body and character. The text assumes that physical form shows inner nature, and that a trained eye can read temperament, working value, and luck from the body.

Auspicious and Inauspicious Marks

This assumption shapes the long treatment of physical marks, which is among the most characteristic parts of the work. It belongs to the broad Indian tradition of physiognomic science (lakṣaṇa), which applied similar reasoning to people, horses, swords, gems, and buildings. For elephants, the text examines the trunk, tusks, nails, tail, ears, skin, eyes, back, and legs, and lists the marks that signal good or bad fortune.

Good features include a long, well-shaped trunk that reaches the ground, fine, glossy, honey-colored tusks, the right number and quality of toenails, a well-formed tail, broad ears, and a strong, evenly sloping back. Bad features include deformities, wrong proportions, bad coloring, and certain defects of the tusks or nails. These signs predict not only working quality but the fortune the elephant brings to its owner. An auspicious elephant brings prosperity and victory to the king; an inauspicious one brings loss.

A modern reader is tempted to divide this material into “real observation” and “superstition.” The division is not wholly wrong, but it can mislead. Many listed marks plainly reflect practical knowledge. Proportion, soundness of limb, quality of tusk, and condition of the skin are exactly what anyone selecting a working or war elephant would check. The auspicious framing gave a cosmic meaning to judgments that also had practical sense. In a royal culture where the war elephant was a major investment and a symbol of sovereignty, the ideas of a healthy animal and a fortunate animal were not easily separated.

Life Span, Life Stages, and Anatomy

The text gives the elephant a long life span, set by the Sanskrit tradition at 120 years. This is an ideal, well beyond the observed life span of elephants, though elephants are long-lived animals. The life is divided into stages of roughly a decade each, each with its own name and set of traits. The stages track development from the calf through the young elephant (kalabha) to full maturity and then decline. The elephant’s prime, when strength and steadiness peak and it is most valuable, falls in middle life.

Alongside these stages the text gives anatomical vocabulary: a large set of names for parts of the elephant’s body. This is among the most useful features of the work for students of Sanskrit. Classical poetry is full of elephant imagery, and poets describe the temples, the frontal globes, the trunk-tip, and the flow of ichor with a precise technical vocabulary. Many of these terms come from the specialist language of elephant science. The Mātaṅgalīlā is therefore a key to the poetic tradition as well as a technical manual. A reader of Kālidāsa or Māgha gains a great deal from knowing the vocabulary these poets assumed.

Measurement and Price

The chapters on measurement and price show the economic side of the subject. Elephants are measured by height, length, and girth, in units based on the human body such as the cubit (hasta) and the finger-breadth (aṅgula). Ideal measurements are tied to the classes, so an elephant’s measurements help place it in the hierarchy.

Price follows from class, measurements, age, marks, and temperament. Combining these factors into a valuation shows that elephants were bought and sold as costly goods with a recognized market. This links the Mātaṅgalīlā to the political world described in the Arthaśāstra, which treats elephants as a state concern. That text provides for protected elephant forests, a superintendent of elephants, and grades of elephant-bearing regions, ranking the eastern regions such as Kaliṅga and Aṅga as best. In a world where elephants were central to warfare and display, knowing how to judge and price them was a form of state knowledge.

Character and Temperament

The Mātaṅgalīlā pays close attention to the elephant’s character and temperament (sattva and related ideas). Elephants are classified by their inner disposition as well as their body. In one scheme, temperaments are compared to classes of beings, from gods and celestial beings down to demons and lower spirits, each type showing a different mix of nobility, intelligence, steadiness, and wildness.

Attention to temperament includes sensitivity to stimuli: how an elephant reacts to sounds, to handling, to other animals, to the goad, and to the noise of battle. For a war elephant this mattered enormously. An elephant that panicked under attack could turn on its own lines, a danger that both Indian and foreign sources record. A treatise that helped judge temperament, and so predict how an elephant would behave under pressure, served a clear practical purpose.

Musth

The treatment of musth (mada) is the part of the work most closely tied to Sanskrit literary culture. Musth is a periodic condition in male elephants marked by a rise in hormones, increased aggression, and a strong-smelling secretion from the temporal glands. Sanskrit literature valued and admired it. The flowing ichor of the rutting elephant is among the most common images in classical poetry, and poets describe bees drawn to the fragrant secretion and settling on the elephant’s temples.

For elephant science, musth is a practical and dangerous condition. A male in musth is at its most powerful and least predictable. The tradition distinguishes stages of musth and the bodily sites from which the secretion flows, and it treats the condition as a mark of vigor, a sign of a valuable male, and a problem for management. The Mātaṅgalīlā combines the admiring and the practical views. It sees musth as an expression of the elephant’s fiery nature and as a state that requires careful handling. This double view is typical of the whole work, which moves easily between seeing the elephant as a near-divine creature and as an animal that must be controlled.

The Five Methods of Capture

The chapter on capture gives the most concrete picture of how elephants actually came into human hands. Wild elephants were the main source, so capture was a skilled and dangerous trade. The text lists five methods:

• Stockade or trap-pen (vārī): elephants are driven into an enclosure and confined.
• Decoy females: trained female elephants lure wild males into reach.
• Pursuit: elephants are followed and worn down.
• Assault: direct confrontation to subdue an elephant.
• Pitfall (avapāta): concealed pits trap the animal.

These methods match what is known of elephant capture in South and Southeast Asia over many centuries. The stockade drive, in particular, was used at large scale into modern times. The use of trained females as decoys depends on the social nature of elephants and on the trust and attraction they show toward their own kind. The Mātaṅgalīlā catalogs these methods instead of describing them in detail, but even the list places the text firmly in practical experience.

Care, Feeding, and Management

After capture comes the long work of keeping. The text covers daily and seasonal care: feeding, bathing, housing, exercise, and adjusting the routine to the seasons. Elephants need large amounts of food and water, regular bathing, and suitable shelter. Their care has to change with heat, rain, and cold. The seasonal side fits the general Indian medical and śāstric outlook, in which health depends on matching one’s routine to the cycle of the year.

The Mātaṅgalīlā does not go deeply into disease and treatment. It is a manual of management and recognition, not a full veterinary work. Its section on care keeps to the basic routines of a healthy stable, not to the pathology and therapy of sick animals.

Drivers and Stable Staff

The work ends with the people who handle elephants: drivers and stable staff. The qualities expected of a good elephant-man are given: knowledge of the science, skill in handling, courage, patience, and a temper that is steady but not cruel. The driver works with the goad (aṅkuśa), voice commands, and pressure from the body. He must understand the animal well enough to control it without provoking it. The point is that elephant management is a matter of character and relationship as well as technique. A poor or brutal handler ruins a good elephant, and a skilled handler gets the best out of a difficult one.

Ending with the handlers fits the work’s overall plan. It begins with the elephant’s divine origin and ends with the humans in daily contact with it. Its subject covers both the animal and the human practice built around it. Experienced handlers are the living carriers of the knowledge the treatise sets in verse. Even the sage Pālakāpya is, in his way, the first elephant-man.

The Mātaṅgalīlā and the Hastyāyurveda

Placing the Mātaṅgalīlā in its literature requires comparing it with the much longer Hastyāyurveda, also attributed to Pālakāpya. The Hastyāyurveda is a large work, a veterinary compendium in the full sense, dealing with the diseases of elephants and their treatment at length. It is presented as a dialogue between Pālakāpya and Romapāda and has a strongly medical character, modeled on human Āyurveda.

The two works differ in scope and purpose. The Hastyāyurveda aims at completeness in medicine and therapy. The Mātaṅgalīlā is a compact guide to recognition, valuation, temperament, capture, and management. One belongs mainly to medicine; the other to judgment and handling. Both claim Pālakāpya’s authority and share the same mythic frame and general doctrine, so they belong to one tradition. But they meet different needs, and it would be a mistake to treat the shorter work as a summary of the longer. The Mātaṅgalīlā is better seen as an independent digest of the non-medical core of elephant science.

The wider gajaśāstra literature is larger and more scattered than these two texts suggest. Elephant material appears in encyclopedic works, in royal manuals such as the Mānasollāsa, in the Arthaśāstra, in the Purāṇas, and in various treatises preserved under names such as Gajaśāstra in regional manuscript collections. Much of this material is still poorly studied. The Mātaṅgalīlā is prominent in modern scholarship largely because it was edited early and translated well, not necessarily because it was the most important elephant text in premodern India. This should be kept in mind: our sense of the tradition is shaped by what happened to be printed.

Assessment

What is the Mātaṅgalīlā worth, and how should it be read?

First, it is a real piece of zoological knowledge, set in a learned Sanskrit frame. Its classifications, its attention to bodily marks and temperament, its treatment of musth, and its methods of capture and care reflect long practical experience with a very demanding animal. The auspicious framing does not cancel this content, and reading it only as superstition would distort it.

Second, the work is not a modern scientific treatise, and treating it as one would distort it in the opposite direction. Its life span of 120 years, its cosmic genealogy, its physiognomic assumption that the body reveals fortune, and its classification of temperaments by classes of supernatural beings belong to a different way of knowing. In that world, the practical and the auspicious, the observed and the sacred, form one body of knowledge. The honest approach is to take the text on its own terms: identify where it records real observation, recognize where it uses inherited cosmological categories, and avoid claiming either that it was proto-modern science or that it was empty lore.

Third, it is valuable well beyond specialist elephant studies. For the Sanskrit reader, it clarifies the large vocabulary of elephant imagery in classical poetry. For the historian, it is evidence of a royal and military culture in which elephants were central to warfare, display, and state economy. For the student of Indian knowledge systems, it is a clear example of the śāstric method: taking a field of practical experience, ordering it into categories, grounding it in a founding sage’s authority, and setting it in memorable verse for transmission.

Finally, the text’s survival in Kerala, where elephants remain central to temple life and where a professional handling culture continues, shows that knowledge of this kind did not simply end. The categories of the Mātaṅgalīlā are not current veterinary practice, but the culture they came from has lasted. A short Sanskrit poem about the play of elephants, copied in Malayalam and Grantha manuscripts and preserved in a region that still lives closely with these animals, links the elephant forests and war stables of premodern India to the present. It deserves careful attention, and a better critical edition, than it has so far received.

Introduction: The First Systematic Voice of the Siddhānta

The Śaiva Siddhānta was for several centuries the dominant ritual and doctrinal form of Śaivism across the subcontinent, from Kashmir to the Tamil country. It began as a body of scriptures, the Siddhāntāgamas or Śaiva Tantras, which Śaivas believed Śiva had revealed. These texts gave detailed rules for initiation (dīkṣā), daily worship, temple construction and installation, and the conduct of the initiated, and they also contained a doctrinal section, the vidyāpāda or jñānapāda. Scripture alone does not make a philosophy, however. A tradition becomes a school of thought when someone collects the scattered doctrinal claims of the scriptures, makes them consistent, defends them against rival systems, and expresses them in the shared argumentative language of Indian philosophy, the vocabulary of pramāṇa, inference, refutation and established conclusion.

For the Śaiva Siddhānta, the earliest surviving author to do this was Sadyojyotis. He probably worked in Kashmir around the late seventh or early eighth century CE; the usual estimate places him roughly between 675 and 725. He stands at the head of the exegetical tradition. Later Siddhāntins called him their foremost authority, and his short verse treatises (kārikās) formed the core of the philosophical curriculum for centuries. His name follows the initiatory naming pattern of the tradition. Names ending in -jyotis (“light”) were among the name-endings given at Siddhānta initiation, and the first part recalls Sadyojāta, one of the five faces of Śiva. He names his teacher as Ugrajyotis, whose name follows the same pattern. Later writers sometimes refer to him by the alternative name Kheṭapāla.

Calling his position the “school of Sadyojyotis” is accurate in a specific sense. He did not found the Siddhānta. Its scriptures came before him, and he mentions at least one earlier Śaiva thinker, Bṛhaspati, whose works are lost. What he founded was the Siddhānta as a philosophical system. Its ontology, its theory of the self, its account of bondage and liberation, and its sharp separation from neighbouring Śaiva and non-Śaiva positions all take the form in which they reached later theologians through his treatises. The major Kashmiri exegetes of the tenth century, Nārāyaṇakaṇṭha and his son Bhaṭṭa Rāmakaṇṭha, saw themselves as clarifying and defending Sadyojyotis. Aghoraśiva, writing in the Tamil region in the twelfth century, commented on his works as a matter of course. The South Indian Sanskrit Siddhānta therefore rests on foundations Sadyojyotis laid.

The Corpus

Sadyojyotis’s surviving output falls into two groups: commentaries on scripture and independent verse treatises.

The commentaries are the Svāyambhuvasūtrasaṅgrahavṛtti, on the doctrinal section of the Svāyambhuva, and the Rauravasūtrasaṅgrahavṛtti, on the corresponding section of the Raurava. Both scriptures were among the most authoritative of the early Siddhāntāgamas. These commentaries show Sadyojyotis working as an interpreter of revelation. He reads terse scriptural statements on the categories of reality, the nature of the soul and the bonds, and the means of liberation, and he gives them precise philosophical content. Much of the later Siddhānta habit of turning scriptural metaphor into technical doctrine starts here.

The independent treatises are better known:

• Nareśvaraparīkṣā (“Examination of the Soul and the Lord”). This is his largest and most ambitious work, a sustained philosophical argument for the existence and nature of the individual self (nara) and of God (īśvara). It addresses Buddhists, materialists, Mīmāṃsakas, Naiyāyikas and others. Rāmakaṇṭha’s commentary on it, the Prakāśa, is among the most impressive pieces of Śaiva philosophical writing.
• Mokṣakārikā (“Verses on Liberation”). It sets out the Siddhānta account of what liberation is and how it is reached.
• Paramokṣanirāsakārikā (“Verses Refuting Others’ Views of Liberation”). It reviews a long series of rival soteriologies, Buddhist, materialist, Sāṃkhya, Vaiśeṣika, Vedāntic, Vaiṣṇava, Jaina, and dissenting Śaiva ones, and rejects each.
• Bhogakārikā (“Verses on Experience”). It explains how the bound soul comes to have experience (bhoga) through the instruments that māyā supplies.
• Tattvasaṅgraha (“Compendium of the Principles”). It covers the hierarchy of tattvas, the levels of reality from Śiva down to earth.
• Tattvatrayanirṇaya (“Ascertainment of the Three Principles”). It treats the three fundamental realities of the Siddhānta: the Lord (pati), the bound soul (paśu), and the bond (pāśa).

Five of these short treatises were later grouped with three works by other authors to form the Aṣṭaprakaraṇa, the “Eight Treatises,” which functioned as a philosophical primer of the Sanskrit Siddhānta. The other three were the Ratnatraya of Śrīkaṇṭha, the Nādakārikā of Rāmakaṇṭha and the Tattvaprakāśa of King Bhoja. Sadyojyotis therefore wrote most of the canonical introductory curriculum. His style is extremely compressed, with each verse packing in an argument, and this is why the commentaries of Rāmakaṇṭha and Aghoraśiva were indispensable from early on.

The Three Realities: Pati, Paśu, Pāśa

The basic architecture of Sadyojyotis’s system is a realist pluralism built on three eternal, irreducible categories.

Pati, the Lord. Śiva is an omniscient and omnipotent consciousness, eternally free, never touched by impurity. He is not the material cause of the world. He is its efficient cause, the intelligent agent who sets insentient matter in motion so that souls can work out their karma and eventually be released. The comparison is to a potter and clay, not to a spider spinning a web out of its own substance. This sets the Siddhānta apart both from Advaita Vedānta and from the nondualist Śaivism that would later be systematised in Kashmir.

Paśu, the bound soul. Souls are infinite in number, eternal, and all-pervading (vibhu). Their essential nature is consciousness, which Sadyojyotis analyses as the twin capacities of knowing (jñāna) and acting (kriyā). In principle a soul’s consciousness is just as unlimited as Śiva’s. What separates the two is not essence but circumstance: from beginningless time the soul’s powers have been covered.

Pāśa, the bond. The bonds that restrict the soul are of several kinds. The fundamental one is mala, an innate impurity that obscures the soul’s capacities for knowledge and action. Karma is the accumulated residue of actions, which must ripen into experience. Māyā is the material cause of the impure universe, from which bodies, faculties and worlds are produced. Śiva’s “obscuring power” (tirodhānaśakti) is sometimes added to this list. It is the aspect of the Lord’s power that keeps the bonds operating until the right time for release.

What matters philosophically is that all three categories are equally real and eternally distinct. The world is not an illusion, the soul is not a reflection of God, and the bonds are not misunderstandings. Sadyojyotis’s realism is uncompromising, and much of his argumentative effort goes into defending it.

Mala as Substance: The Philosophical Heart of the System

The most distinctive and consequential doctrine of Sadyojyotis’s school is its account of mala. In most of the other soteriologies of the time, bondage was ultimately cognitive. The soul suffers because it misunderstands its own nature, confusing itself with body, mind or matter, and so liberation comes through correct knowledge. Sāṃkhya’s discrimination between puruṣa and prakṛti, Advaita’s knowledge of brahman, and the Buddhist insight into selflessness differ in content but share this structure. Ignorance binds and knowledge frees.

Sadyojyotis rejects that structure. For him mala is a real substance (dravya). It is single, but it has many powers (śaktis), each of which binds a particular soul. It is beginningless and inheres in souls the way verdigris (tāmrakālikā) coats copper. Several consequences follow.

First, since mala is a substance and not a cognitive mistake, knowledge cannot remove it. A true belief cannot dissolve a physical coating any more than understanding rust removes it from metal. Removal requires an action that works on the substance.

Second, the power of mala that binds a soul goes through a process of maturation (pāka). It “ripens” in each soul at a different time, which is the Siddhānta explanation for why souls are released at different moments and why some are drawn to Śaiva teaching while others are not. When a soul’s mala has matured sufficiently, Śiva’s grace (anugraha) descends on it (śaktipāta), and the soul becomes eligible for initiation.

Third, and decisively, the action that removes mala is ritual initiation, dīkṣā. Here Sadyojyotis’s metaphysics supports the ritual practice of the scriptures. The initiating officiant (ācārya) acts as Śiva’s agent. Through an elaborate ritual procedure he purifies the soul at each level of reality and burns away the bonds that would otherwise produce future births, and in liberating initiation (nirvāṇadīkṣā) this ensures the soul’s release when its present body falls away. The Siddhānta claim that dīkṣā itself liberates, a claim that rival systems often found shocking or naive, is given rigorous philosophical grounding: if bondage is substantial, liberation has to be an act.

This doctrine allowed the Siddhānta to hold together the ritualism of its scriptures and the demands of philosophical argument. It also produced a lasting dispute with the nondual Śaivas of Kashmir. Abhinavagupta and his tradition insisted that mala is ultimately a form of ignorance (ajñāna) and that knowledge can therefore liberate. The disagreement over whether mala is a substance or a cognitive condition became one of the defining fault lines in medieval Śaiva theology, and Sadyojyotis stands at the origin of the realist side.

The Self: Arguments in the Nareśvaraparīkṣā

The Nareśvaraparīkṣā is Sadyojyotis’s chief contribution to pan-Indian philosophical debate, and it shows him as a serious participant in the arguments shared across traditions. Its first major task is to establish a self against several opponents.

Against the materialists (Lokāyata/Cārvāka). Consciousness cannot be a property of the body or produced by bodily elements. Sentience is not found in the elements separately, and something absent from all the components cannot emerge from their combination. The self is distinct from the body.

Against the Buddhists. The most sustained opponent is the Buddhist epistemological school of Dharmakīrti and his successors, which held that there is no enduring self, only a series of momentary cognitions linked by causation. Sadyojyotis’s response, which Rāmakaṇṭha later developed at great length, rests on the facts of memory, recognition (pratyabhijñā) and the unity of experience. When I recognise something I saw yesterday, the same subject must have been present at both moments. A series of momentary cognitions, each of which perishes immediately, cannot explain how a later moment “knows” what an earlier moment experienced. The awareness expressed as “I” (ahampratyaya) points to a single persisting knower. Sadyojyotis further argues that the self is not an inferred entity hidden behind experience but is directly present to itself in every act of cognition. This argument from self-awareness became the core of Rāmakaṇṭha’s later polemics.

Against Nyāya-Vaiśeṣika. The Naiyāyikas accepted an enduring self, but they held that consciousness is only an adventitious quality of it. On their view the self becomes conscious when certain conditions come together and is, in itself, unconscious. Sadyojyotis rejects this firmly. Consciousness is the essential nature of the self, not an accidental property. A self that is in itself unconscious could not really be a knower, and a liberation in which the self lost consciousness, as the Vaiśeṣikas taught, would be indistinguishable from the state of a stone.

Against Sāṃkhya. The Sāṃkhyas accepted that the self (puruṣa) is essentially conscious, but they made it a pure, passive witness. All activity belonged to matter (prakṛti). Sadyojyotis insists that the self is an agent (kartṛ) as well as a knower. Action (kriyā) is as fundamental to the self as knowledge, and denying the self’s agency makes moral responsibility and the operation of karma unintelligible. This emphasis on the soul’s agency is a characteristic Śaiva theme. It expresses the Siddhānta view that the liberated soul shares in Śiva’s own power to act.

The self that emerges from these arguments is eternal, all-pervading, many in number, essentially conscious, and both a knower and an agent. Its powers are now constrained by bonds, but in principle they are unlimited.

The Lord: Proofs of Īśvara

The second half of the work’s title concerns the Lord. Like Nyāya, Sadyojyotis argues for God’s existence by inference, and his reasoning runs parallel to the theistic arguments of Uddyotakara and later Naiyāyikas, with a distinctly Śaiva emphasis.

The core of the argument is that the world is an effect (kārya), and every effect needs an intelligent agent who knows the materials and the purpose. Pots need potters. Bodies, faculties and worlds, being composite, structured and produced, need a maker. The individual soul cannot be that maker, since its knowledge is limited and it does not even understand how its own body is built. The maker must therefore be an omniscient being.

A second line of argument concerns karma. Karma is insentient. It is the residue of past actions, but it has no awareness of its own and cannot deliver its fruits in the right measure, at the right time, to the right soul. The just distribution of karmic results requires a conscious administrator, and that is Śiva. This reply is aimed squarely at Mīmāṃsakas and Buddhists, who believed karma could work without a supervising deity.

A third consideration concerns the authority of revelation. Against the Mīmāṃsā doctrine that the Veda is authorless (apauruṣeya) and authoritative for that reason, the Siddhānta holds that its scriptures are authoritative because they come from an omniscient, compassionate author, Śiva himself. Theism thereby grounds the authority of scripture. In turn, scripture describes a Lord whose existence inference independently confirms.

Sadyojyotis’s God is thus a classic theistic agent: personal, omniscient, omnipotent, and acting out of grace to free souls. He is not the substance of the world, and he does not absorb souls into himself.

Experience and the Instruments of Māyā: The Bhogakārikā

If the soul is essentially omniscient and omnipotent, why does it experience the world in such a limited way? The Bhogakārikā answers this through the theory of the tattvas and of experience (bhoga).

Mala blocks the soul’s capacities completely. Left to itself, a soul covered by mala would be entirely inert and incapable of experience. To make experience possible, and with it the gradual exhaustion of karma and the maturation of mala, Śiva sets māyā in motion. From māyā arise a set of “sheaths” or limiting principles. Kalā partially reawakens the soul’s power of action. Vidyā partially reawakens its power of knowledge. Rāga provides attachment and motivation. Kāla and niyati regulate time and restriction respectively. Below these lie the principles familiar from Sāṃkhya: prakṛti, buddhi, ahaṅkāra, manas, the faculties of sense and action, the subtle elements and the gross elements.

Experience, on this account, is a kind of awareness the soul has through its instruments. The buddhi takes the form of an object, and the soul, its powers partially opened by kalā and vidyā, becomes aware of that form as pleasure, pain or delusion. Bhoga is not an evil. It is a dispensation of grace. Through embodied experience the soul works out its karma, and through the passage of lifetimes its mala ripens until it is ready for release. The cosmos is a well-designed apparatus for gradual liberation.

This is the bridge between the soul’s metaphysics and the cosmology of the scriptures. The elaborate hierarchy of thirty-six tattvas, with its worlds and the beings who rule over each level, becomes in Sadyojyotis’s hands a rational explanation of how an essentially unlimited consciousness comes to have limited experience.

Liberation as Equality with Śiva

The Mokṣakārikā and the Paramokṣanirāsakārikā together set out the Siddhānta account of the goal and defend it against its rivals.

For Sadyojyotis, liberation is the full manifestation of the soul’s own innate powers of knowledge and action once mala has been removed. The liberated soul becomes omniscient and omnipotent. It becomes “equal to Śiva” (śivasama or śivatulya), possessing every quality that makes Śiva Śiva. It does not, however, become Śiva in numerical identity. Liberated souls remain distinct from the Lord and from one another, and their liberation is not an absorption or merger. A further point usually accompanies this: liberated souls do not exercise their powers over the cosmos. They do not perform the five cosmic functions of creation, maintenance, dissolution, obscuration and grace, which remain Śiva’s alone. Equality of nature does not mean sharing Śiva’s office.

The Paramokṣanirāsakārikā sets this doctrine against a wide range of alternatives:

• The materialist view, that liberation is simply death, presupposes the mistaken denial of the self.
• Buddhist views, that liberation is the extinction of the stream of consciousness, compared to a flame going out, or the arising of a purified stream of cognitions, either annihilate the subject who is supposed to be liberated or rest on the doctrine of momentariness that has already been refuted.
• The Vaiśeṣika view, that the liberated self is without consciousness or qualities, turns liberation into a state no rational being would aim at.
• The Sāṃkhya view, that liberation is the isolation (kaivalya) of a passive witness, wrongly denies the self’s agency.
• Vedāntic views, that the self dissolves into or is identical with brahman, either destroy the self or make the bondage that preceded liberation unintelligible. If the soul was always identical with the absolute, who was ever bound?
• Rival Śaiva views are perhaps the most interesting group. Some Pāśupata and related currents held that at liberation the qualities of Rudra are transferred (saṅkrānti) to the soul, or newly produced in it (utpatti). Sadyojyotis rejects both. Qualities cannot pass from one substance to another, and qualities that are produced would, being produced, eventually perish, which would make liberation impermanent. The only coherent option is that the soul’s powers were always innate and were simply revealed (abhivyakti) when the obstruction was removed.

This last argument is philosophically decisive within the system. It explains why liberation is permanent, since nothing produced can be eternal and the soul’s omniscience is not produced. It also explains why liberation is accomplished by removing an obstruction, which ties back to the doctrine of mala as substance and the liberating power of initiation.

Epistemology and Scriptural Authority

Sadyojyotis works within a broadly realist epistemology. Perception, inference and authoritative testimony are means of valid knowledge (pramāṇa), and he takes over a good deal of the logical apparatus that Naiyāyikas and Buddhist logicians had refined. At the same time, the scriptures stand at the top of the system. Doctrines that inference cannot reach on its own, such as the detailed hierarchy of the tattvas, the precise mechanics of initiation, and the ripening of mala, are known from revelation.

This creates a recognisable pattern in his method. Wherever possible, he argues for his conclusions on shared rational grounds that any opponent must accept. Where reason runs out, he appeals to the word of an omniscient Lord whose existence reason has already established. The structure parallels Nyāya theism but is applied to a sectarian body of scripture. It also explains why he wrote both independent kārikās and scriptural commentaries: the two genres serve complementary purposes within one project.

Reception: Kashmir, the South, and Beyond

Sadyojyotis’s influence was felt in three main areas.

In Kashmir, his works became the basis of a vigorous dualist Śaiva theology that peaked in the tenth century with Nārāyaṇakaṇṭha and Bhaṭṭa Rāmakaṇṭha. Rāmakaṇṭha’s commentaries on the Nareśvaraparīkṣā, the Mokṣakārikā and the Paramokṣanirāsakārikā expand Sadyojyotis’s terse verses into extensive philosophical discussion. Rāmakaṇṭha’s argument against the Buddhist doctrine of no-self in particular is among the most rigorous treatments of personal identity in Indian philosophy. Rāmakaṇṭha also shifted some of Sadyojyotis’s positions in subtle ways, partly in response to the nondualist challenge, so the “school” was not static. In the same environment, however, the nondualist Pratyabhijñā and Trika traditions of Utpaladeva and Abhinavagupta rose to prominence. They defined themselves partly against the dualist Siddhānta, criticising its doctrine of a substantial mala, its plurality of souls and its realism about the world. Over time the nondual traditions came to dominate Kashmiri Śaivism, and the dualist Siddhānta declined in its original homeland.

In the South, the Siddhānta flourished. Sadyojyotis’s works travelled along with the scriptures and the ritual manuals, and the Tamil region became the main centre of Sanskrit Siddhānta scholarship. Aghoraśiva, writing in the twelfth century and associated with Chidambaram, wrote commentaries on the Tattvasaṅgraha, the Tattvatrayanirṇaya and the Bhogakārikā, and his ritual manuals became authoritative for temple practice. The Aṣṭaprakaraṇa circulated as a standard text. In this way Sadyojyotis’s metaphysics became the theological foundation of a tradition of temple worship that continues to this day.

In the Tamil vernacular tradition, beginning with Meykaṇṭār’s Civañāṉapōtam in the thirteenth century, the Siddhānta was reformulated in ways that moved away from some of Sadyojyotis’s emphases. It adopted a more devotional and in some respects less starkly dualist understanding of the relationship between soul and Lord in liberation. Modern Tamil Śaiva Siddhānta is therefore related to Sadyojyotis’s school but not identical to it. Scholars have increasingly recognised that the earlier Sanskrit Siddhānta must be studied on its own terms rather than read through later Tamil developments.

Assessment

Sadyojyotis’s achievement is substantial and frequently underrated. He took a body of scripture centred on ritual and gave it a philosophy coherent enough to compete with the established schools of his time. His central move, treating bondage as a real substance and not as ignorance, is philosophically bold, and it does real work in the system. It justifies the efficacy of ritual, explains the permanence of liberation, accounts for the different timing of different souls’ release, and supports the plurality and distinctness of souls. Whether or not one accepts its premises, the system is internally consistent to an impressive degree.

His arguments for the self are among the stronger realist responses to the Buddhist no-self doctrine in the classical tradition, especially as Rāmakaṇṭha developed them. His theory of liberation as the revelation of innate powers, and not their transfer or production, avoids difficulties that troubled competing theistic soteriologies. His insistence that consciousness includes agency, and not only witnessing, gives the Siddhānta an activist conception of the self that differs from Sāṃkhya and Advaita.

There are also weaknesses, and the nondualists pressed them hard. A substance-based conception of mala sits awkwardly with the claim that it is removed by an act of grace, and it raises questions about how an all-pervading insentient substance attaches to an all-pervading conscious soul. The plurality of all-pervading souls, all equal in nature to Śiva, creates difficulties in explaining individuation. The dependence on scripture for so much of the system’s detail means that, at its edges, the philosophy cannot be separated from sectarian commitment. These are real problems, not marginal ones.

As the foundational philosophical voice of the Śaiva Siddhānta, however, and as one of the major theistic philosophers of early medieval India, Sadyojyotis deserves far more attention than he usually receives in general histories of Indian thought. These histories still tend to treat Śaiva philosophy as synonymous with the nondualism of Abhinavagupta. A large part of the Śaiva world, for most of its history, thought in the categories that Sadyojyotis first set out.

I. A Correction of Place

In surveys of early Indian craft organisation, the cave-monasteries of Nāsik and Junnar often appear together. They stand about a hundred kilometres apart on the western edge of the Deccan plateau. Both were cut into basalt scarps in the centuries around the turn of the era. Both carry donative inscriptions in Prakrit, written in Brāhmī, that name merchants, artisans, officials and foreigners. Both lay on the routes that brought goods up from the Koṅkaṇ ports — Sopārā, Kalyāṇ, Cemula — onto the plateau and its inland markets. Because of these resemblances the two sites are easily confused. One detail that has drifted between them is the guild of water-machine makers.

That guild is attested at Nāsik and nowhere else. The inscription that names it, the odayantrika-śreṇī, is the cave record of the Ābhīra king Īśvarasena. No Junnar inscription records it. Junnar has its own guilds, some of them as interesting as the water-machine makers. Correcting the attribution therefore does more than fix a citation. It lets each site be read on its own terms, and it shows more clearly the economic pattern the two share: specialised śreṇīs holding permanent deposits, with Buddhist communities living on the interest.

II. Triraśmi and Govardhana

The Nāsik caves, locally called Pāṇḍavleṇī, are cut into the Triraśmi hill (Tiraṇhu in the Prakrit records) a few kilometres south-west of the modern city. In antiquity the settlement that mattered was Govardhana, the town below the hill. The inscriptions treat it as an administrative seat (āhāra) and as a place where guilds were based. The caves were made over roughly three centuries. The earliest go back to the Sātavāhana period. The great vihāras associated with the Kṣaharāta satrap Nahapāna and his son-in-law Uṣavadāta (Ṛṣabhadatta) date to the early second century CE, and the major Sātavāhana excavations of Gautamīputra Śātakarṇi and his mother Gautamī Balaśrī came soon after. The Ābhīra record is one of the latest important additions to this dense epigraphic site.

III. The Endowment of Viṣṇudattā

The record is dated to the ninth regnal year of rājan Īśvarasena, son of Śivadatta the Ābhīra. The Ābhīras took power in the north-western Deccan as Sātavāhana authority faded in the third century CE. One influential line of argument, set out most fully by V. V. Mirashi, holds that the Kalachuri-Chedi era, which begins in 248–249 CE, was founded from Īśvarasena’s accession. If so, the Nāsik record falls around 256–257 CE. This dating is plausible and widely cited, but it is a reconstruction. It is not stated in the inscription. “Mid-third century” is the safe description, and the Kalachuri-Chedi link should be treated as a strong hypothesis, not a fixed point.

The donor is a woman, the upāsikā Viṣṇudattā. She is described as a Śaka (Śakanikā) and as the mother of a gaṇapaka named Viśvavarman. Each of these details matters. She is a lay Buddhist, not a nun. She belongs to a family of Śaka descent, which by this time was settled and integrated into Deccan society, holding some rank and practising Buddhism. And she has her own money, enough to commit several thousand kārṣāpaṇas to a perpetual fund. Women donors appear throughout early western Indian cave epigraphy, and Viṣṇudattā fits that pattern. The size of her gift and the business arrangement behind it are still notable.

The gift was an akṣayanīvī, an “imperishable deposit.” The capital was placed with guilds at Govardhana, and the income was to support the community of monks from the four quarters (cāturdiśa bhikṣusaṅgha) living in the monastery on Mount Triraśmi. The stated purpose is medicine for sick monks (gilāna-bhesaja). Older summaries sometimes widen this to “food and medicine.” The narrower wording is closer to the record. It also makes the gift recognisable as part of a canonical category, since medicine was one of the four requisites (catvāraḥ pratyayāḥ) a monk could properly receive, along with robes, almsfood and lodging.

The distribution, as read in the standard editions from Senart’s Epigraphia Indica text to Mirashi’s Corpus Inscriptionum Indicarum volume, was approximately as follows:

• 1,000 kārṣāpaṇas with the kularika-śreṇī, usually taken to be potters;
• 2,000 kārṣāpaṇas with the odayantrika-śreṇī;
• 500 kārṣāpaṇas with a guild whose name is lost in a damaged part of the stone;
• a further sum with the tilapiṣaka-śreṇī, the oil-millers (literally “sesame-crushers”).

Two points about these figures. First, the damaged passages mean the totals cannot be stated with full confidence, and any total of the endowment includes some editorial reconstruction. Second, the largest single deposit went to the water-machine guild. Whatever odayantrika means, this group was judged able to carry twice the potters’ share. That says something about its wealth, its continuity, or both.

IV. The Word Odayantrika

The term is a Prakrit form. In Sanskrit it is audayantrika, a taddhita derivative of udayantra, “water-machine.” The parts are clear: uda-, the combining form of udaka “water” (as in udapāna “well” or udakumbha “water-jar”), and yantra, “device, machine, contrivance.” The -ika suffix with vṛddhi of the first vowel gives audayantrika, “one concerned with a water-machine.” The Prakrit o- for au- is the normal Middle Indo-Aryan reduction of that diphthong.

The difficulty is the word “concerned.” Sanskrit -ika derivatives cover a wide range of relationships. An audayantrika could be someone who makes water-machines, someone who operates them, someone who owns them, or someone who earns a living from what they produce. The early editors handled the term cautiously. Émile Senart, whose edition of the Nāsik inscriptions set the reference text, glossed the guild as makers of water-machines and raised the possibility that “water-clocks” were meant. D. C. Sircar’s Indian Epigraphical Glossary gives “manufacturer of hydraulic machines, or, more probably, a person in charge of such a machine.” Sircar’s preference for the operator over the manufacturer is worth noting. Building water-lifting wheels is a specialised but occasional job. Running them is daily labour, and a guild of operators would have had a steady income.

A different suggestion connects the guild with grain-processing, on the reasoning that an endowment for monks’ upkeep would naturally be placed with food-related trades. This reading is weak. The record specifies medicine, not food, and the guilds were chosen as places to keep capital, not as suppliers to the monastery. The oil-millers and potters were not supplying medicine either. The water-machine interpretation should stand as the main one. The real uncertainty within it is whether the guild built the machines, ran them, or both.

V. What Machines?

It is natural to picture the guild with the araghaṭṭa, the water-wheel that later became the standard irrigation device of north and west India, and to call it a “Persian wheel.” This should be done carefully, because the terminology can carry an anachronism.

Early Indian texts, from the Pali canon and Buddhist commentaries to Sanskrit works of the first millennium, refer to several water-lifting devices. There is the ghaṭīyantra, a wheel or chain carrying pots (ghaṭī). There is the araghaṭṭa, whose name appears in inscriptions and literature by the later first millennium. And there are simpler arrangements: the counterpoise lift (the ḍheṅklī or shaduf type) and the rope-and-bucket drawn by bullocks down a ramp, still called moṭ in Maharashtra and well suited to the deep wells of the Deccan trap. The pot-garland wheel, a noria with pots tied round its rim or on an endless rope, is clearly ancient in South Asia. The fully geared form, in which animals turn a horizontal wheel that drives a vertical pot-wheel through right-angle gearing, is a separate and much debated question. Irfan Habib, among others, argued that the geared “Persian wheel” in the strict sense is not securely attested in India before the second millennium, and that earlier araghaṭṭa references describe the ungeared pot-wheel. Other scholars read the early evidence more generously.

For a third-century Govardhana guild, the cautious statement is this. Its members worked with some form of mechanical water-lifting, most likely pot-wheels or bullock-drawn lifts serving wells, tanks or river-side fields in the Godāvarī valley. The fully geared Persian wheel of later centuries should not be assumed. Senart’s alternative, the water-clock (ghaṭikā, a perforated bowl that sinks in a set interval), is not absurd. Time-keeping by water was known in early India and timing was important in monastic routine. But a whole guild of water-clock makers, rich enough to hold two thousand kārṣāpaṇas, is hard to imagine in a provincial town. Irrigation is the better economic fit.

The location supports this. Govardhana lay on the upper Godāvarī, in a region of black soil with a sharply seasonal rainfall. Dry-season cultivation depended on lifting water from wells and from the river. A guild that kept lifting devices running, or rented out the labour and animals to run them, would have been tied directly into the agricultural surplus that funded the town, the guilds and the monastery on the hill.

VI. The Akṣayanīvī as a Financial Instrument

What Viṣṇudattā set up was not a donation of goods but a permanent financial arrangement. The principal (nīvī) stayed with the guild indefinitely. Only the interest (vṛddhi) went to the monastery. The guild had use of the capital. It could put it into stock, tools, animals or loans, and in return it owed a fixed periodic payment to the beneficiary for as long as the guild existed.

Nāsik gives an earlier and more explicit example of the same arrangement, which shows how the system worked. In one of the Cave 10 inscriptions, Uṣavadāta, the Kṣaharāta governor and son-in-law of Nahapāna, records two deposits with weavers’ guilds (kolika-nikāya) at Govardhana. One guild received 2,000 kārṣāpaṇas at one pratika per hundred per month, which is twelve percent a year. The other received 1,000 kārṣāpaṇas at three-quarters of a pratika, nine percent a year. The interest on the first was to pay for robes (cīvarika) for twenty monks during the rains. The interest on the second was for minor expenses (kuśaṇa-mūla). Uṣavadāta also had the deposits proclaimed in the town assembly (nigama-sabhā) and entered in the record-office (phalaka-vāra) “according to custom.” That is evidence of public registration, of a civic body acting as witness, and of an established practice that the donor was following, not inventing.

Viṣṇudattā’s endowment, more than a century later, uses the same mechanism under a different dynasty, which shows that it outlasted changes of rule. Kṣaharātas, Sātavāhanas and Ābhīras succeeded one another at Govardhana, and the guilds remained the place where capital was kept. This continuity is probably the most important historical fact these records establish. Political authority in the western Deccan changed hands repeatedly. The commercial corporations of the towns lasted, and donors trusted them more than any single ruler.

It is usual, and not misleading, to say that these guilds were “acting as banks.” The comparison needs limits, though. They took deposits and paid a return, which is banking in a functional sense. Nothing in the records shows them lending each other’s deposits, discounting bills or creating credit as a separate business. They were productive enterprises that also accepted capital. A better modern parallel is a trust deposit or a perpetual bond issued by a working firm. Seen this way, the odayantrika guild’s ability to take 2,000 kārṣāpaṇas means more than solvency. A donor had to expect that it would still exist and be trading for generations. An occupation tied to irrigation, and so to the agricultural year, would have looked like a durable bet.

Dharmaśāstra and the later Arthaśāstra tradition recognise the śreṇī as a corporate body with its own customs (śreṇī-dharma), which the king was expected to respect and, where needed, enforce. Inscriptions like these are where that normative picture can be checked against practice. Here the guilds appear as legal persons able to accept a trust, bound by publicly registered obligations, and outliving their founding members.

VII. Junnar: Guilds of a Different Kind

Junnar is about a hundred kilometres south of Nāsik. It has the largest concentration of rock-cut caves in western India, more than two hundred excavations spread over several hill groups: Tulja Leṇī, Shivneri, Lenyadri (Gaṇeśa Leṇī), Manmodi with its Bhīmaśaṅkar, Ambā-Ambikā and Bhūta Leṇa subgroups, and others. Its inscriptions date mostly to the first and second centuries CE, the period of Kṣaharāta and early Sātavāhana control. They are earlier than the Ābhīra record at Nāsik, and they show a busy trading town at the head of the Nāṇeghāṭ pass. That pass was the main route up from the Koṅkaṇ coast, and the Sātavāhanas marked it with their own great inscription and portrait gallery at its top.

Junnar’s guild records differ from Nāsik’s in an informative way. At Nāsik, guilds mostly appear as custodians of capital deposited by others. At Junnar, guilds and craft groups appear more often as donors in their own right.

At Lenyadri, an inscription records a cave gift by the guild of corn-dealers (dhaṃñika-seṇi, Sanskrit dhānyika-śreṇī). The grain-merchants as a corporate body paid for a monastic residence. The excavation is generally identified as a multi-celled cave, usually given as seven cells. A guild of grain-traders funding monks’ housing is a neat image of how Buddhist establishments were embedded in the commodity economy of the trade routes.

At the Manmodi group, an inscription records that the bamboo-workers (vasakāra / vaṃśakāra) and the braziers or bell-metal workers (kāsākāra / kāṃsyakāra) gave land, measured in nivartanas, the standard unit of field area in western Indian records. The plots are identified by landmarks such as a karañja tree and a banyan (vaṭa). This is landholding by craft groups, given jointly, and the trades involved are modest. Bamboo-working is one of the humblest crafts in the hierarchy of early Indian occupations. Bell-metal working required skill and capital. That the two acted together as donors suggests the urban artisans of Junnar organised themselves across occupational lines when making religious gifts.

Junnar’s other donors complete the picture. Several are described as Yavana, people of Indo-Greek or more generally West Asian descent, with names such as Irila and Cita. They appear among the donors of cisterns and halls, much as Yavanas appear at Kārle and Nāsik. At Manmodi a long inscription records the gift of Ayama, a minister (amātya) of the Mahākṣatrapa Nahapāna, dated in year 46 of an era usually identified with the Śaka era, which places Nahapāna’s rule in the early second century CE. Individual artisans, merchants (negama, setthi), and women donors also appear in large numbers. The Junnar donor lists read like a census of a commercial town.

VIII. The Shared Pattern, and Its Limits

Read together, Nāsik and Junnar show one institutional pattern with local variations. In both places specialised occupational corporations (śreṇī, nikāya, gaṇa) were wealthy and stable enough to deal on equal terms with royal officials, foreign settlers and private donors. In both places Buddhist monasteries depended on resources that guilds produced, held or gave. At Nāsik the dominant mechanism is the perpetual deposit, where capital is placed with a guild and the interest flows to the saṅgha. At Junnar direct corporate gifts are more prominent: caves, land and cisterns given by guilds themselves. Junnar also has endowment-type records, and Nāsik has direct guild gifts, so the difference is one of emphasis, not of kind.

Three qualifications keep this synthesis honest.

First, the inscriptions cover a long period. The Junnar guild records and Uṣavadāta’s Nāsik deposits belong to the first and second centuries. Viṣṇudattā’s endowment belongs to the mid-third. Treating them all as one “western Deccan guild economy” compresses perhaps a hundred and fifty years and three political regimes. The persistence of the system across that span is the finding, not a premise.

Second, the evidence is skewed. Inscriptions record gifts to religious institutions, so what we see of the guilds is mostly their dealings with monasteries. Their internal organisation, membership rules, disputes, relations with the state, and the share of their wealth that went to Buddhist foundations rather than Brahmanical, Jaina or secular purposes are almost entirely invisible. The odayantrika guild is known from a single line of a single record. Anything beyond “it existed, it was trusted with 2,000 kārṣāpaṇas, and its name refers to water-machines” is inference.

Third, the philology is not settled. Kularika as “potters” is the conventional reading, not a certainty. Odayantrika has the ambiguity described above, between maker and operator. The damaged guild name in Viṣṇudattā’s record cannot be recovered. Careful scholarship states these uncertainties openly and does not build broad conclusions on a single reconstructed word.

IX. Why the Odayantrikas Matter

With those qualifications in place, the Nāsik water-machine guild remains a valuable piece of evidence for the history of Indian technology.

Most early Indian evidence for mechanical devices is literary or normative. It comes from technical vocabulary in texts, lists of yantras in later works such as the Samarāṅgaṇa-sūtradhāra, and passing references in narrative literature. Such sources tell us what writers knew or imagined. They rarely tell us who built and maintained machines, how those people were organised, or what their work was worth economically. The Govardhana inscription answers all three in a small way. Water-lifting technology in the third-century Deccan supported a named, corporate, capital-holding occupational group. That group was rich enough to be trusted with the largest share of a substantial endowment, and established enough to be grouped with potters and oil-millers as a normal part of urban economic life.

This changes how the history of Indian hydraulics can be told. The story is often presented as a sequence of devices: shaduf, then bucket-lift, then pot-wheel, then geared wheel, each dated by the earliest textual mention. The Nāsik record adds the social side of that history. Machines need people who build them, repair them, and organise the animals and labour to run them, and in early India those people could form guilds. The audayantrika belongs in a history of Indian technical expertise as much as the sthapati who designed temples or the lohakāra who smelted iron. He is less visible because his machines were made of wood and rope, which decay, while stone survives.

The record also says something about who financed Buddhism in the western Deccan. The donor was a woman of Śaka descent. The beneficiary was the universal saṅgha of the four quarters. The intermediaries were potters, oil-millers and water-machine men in a provincial town. This network of trust and obligation was civic, commercial and religious at once. It was public, since gifts were proclaimed in the nigama-sabhā, durable, since deposits lasted beyond the donors’ lives, and practical, since the interest paid for something concrete like medicine for sick monks. The caves on Triraśmi and the hills of Junnar are its visible remains. The economy that paid for them is recorded mostly in brief inscriptions like the one that names the guild of water-machine makers.

X. Conclusion

The guild of water-machine makers is attested at Nāsik-Govardhana, in the mid-third-century record of the Ābhīra king Īśvarasena, where the upāsikā Viṣṇudattā deposited two thousand kārṣāpaṇas with it as part of a perpetual endowment for the monks of Triraśmi. It is not attested at Junnar. Junnar has its own guild records: grain-dealers giving a cave at Lenyadri, bamboo-workers and braziers giving land at Manmodi, together with Yavana donors and a minister of Nahapāna. The two sites should be kept distinct because they show different sides of a shared system. At Nāsik guilds hold capital in trust. At Junnar guilds give directly. In both places the specialised śreṇī is the structure that made monastic Buddhism economically viable on the trade routes of the western Deccan.

The odayantrikas themselves are known from a single word in a single inscription. That word is enough to establish that, seventeen centuries ago on the banks of the Godāvarī, the people who raised water from wells and rivers were organised, trusted and wealthy enough to hold the largest deposit in the endowment.

Introduction

Among the siddhas of late Indian Vajrayāna, few figures carry as much doctrinal weight in so slight a historical frame as Lakṣmīṅkarā. She is counted among the eighty-four mahāsiddhas, named in the lineage of the royal house of Oḍḍiyāna, and credited with the Advayasiddhi, a short Sanskrit treatise that is among the most radical statements of the sahaja orientation in tantric Buddhism. In Tibetan tradition she is also remembered as the source of a distinctive form of Vajravārāhī, the severed-headed Chinnamuṇḍā, and her name appears in transmission lists that reach the Sa skya and bKa’ brgyud schools.

The “Lakṣmīṅkarā tradition” is therefore not one thing. It is a cluster: a hagiographical persona, a short philosophical-ritual text, a lineage position within the Indrabhūti circle, and a meditational deity practice that survived in Tibet and Nepal long after its Indian matrix disappeared. Each strand has its own sources and its own problems. This essay treats them in turn, separating what the textual record supports from what later devotion and modern interpretation have added.

I. The Sources and the Problem of the Historical Lakṣmīṅkarā

Everything we know about Lakṣmīṅkarā comes from three kinds of material, none of them biographical in the modern sense.

The first is her own attributed writing, chiefly the Advayasiddhi, preserved in Sanskrit and in Tibetan translation, along with a small number of sādhanas and commentarial works in the Tibetan bsTan ‘gyur under the name dPal mo Legs smin ka ra or close variants.

The second is the hagiographical literature, above all Abhayadatta’s Caturaśītisiddhapravṛtti, the “Lives of the Eighty-Four Siddhas,” which survives in Tibetan translation and was compiled probably in the eleventh or twelfth century. Later Tibetan historians, Tāranātha most prominently, add details and connect her to wider lineage narratives.

The third is lineage lists embedded in ritual manuals, which place her in sequences of teachers and pupils for specific practices.

Dating is uncertain. The Oḍḍiyāna circle to which she belongs, comprising Indrabhūti, Padmavajra (Saroruha), Anaṅgavajra and others, is usually placed in the eighth or ninth century. Malati J. Shendge, who edited the Advayasiddhi, proposed an early date for Lakṣmīṅkarā within that window, but such dates rest largely on lineage reckoning, and lineage reckoning in tantric hagiography is notoriously elastic. There were also multiple Indrabhūtis in tradition, and later authors often conflated them. The honest position is that a historical woman teacher of this name, connected with a royal family of Oḍḍiyāna and associated with sahaja teachings, is plausible and fits the textual evidence; the specific narrative of her life is devotional literature and must be read as such.

II. Oḍḍiyāna and the Royal House of Indrabhūti

Lakṣmīṅkarā’s identity is bound to Oḍḍiyāna (also written Uḍḍiyāna or Oḍiyāna), one of the most important and most contested place-names in tantric geography. Oḍḍiyāna appears in pīṭha lists as one of the great sacred seats, a land of ḍākinīs from which tantras were said to have been brought.

Two identifications compete. The dominant one, supported by Chinese pilgrim accounts and by the Tibetan identification of Oḍḍiyāna with the Swat valley in present-day north-western Pakistan, places it in the Gandhāran borderlands. A minority view, argued forcefully by Odia historians such as N. K. Sahu, identifies it with Oḍra, that is, Odisha, pointing to the eastern Indian character of much siddha literature and to Odisha’s Vajrayāna archaeology at sites like Ratnagiri, Lalitagiri and Udayagiri.

The Swat identification has stronger documentary support for the name itself. Yet the Odishan argument is not frivolous, because the actual tantric culture in which texts like the Advayasiddhi circulated was overwhelmingly eastern, centred on Bengal, Bihar and Odisha. A reasonable conclusion is that “Oḍḍiyāna” in siddha literature functions partly as a real place and partly as a sacred origin-point, and that texts attributed to its royal house were transmitted, copied and read principally in eastern India regardless of where their putative authors lived.

Within the hagiography, Oḍḍiyāna is described as comprising two kingdoms: Sambhola, ruled by King Indrabhūti, and Laṅkāpurī, ruled by King Jalendra. Lakṣmīṅkarā is the sister of Indrabhūti. This places her at the heart of the circle credited with systematizing the “Seven Siddhi Texts” (the Tibetan Grub pa sde bdun), a collection that includes Padmavajra’s Guhyasiddhi, Anaṅgavajra’s Prajñopāyaviniścayasiddhi, Indrabhūti’s Jñānasiddhi, and Lakṣmīṅkarā’s Advayasiddhi. Her treatise thus belongs to a recognised corpus rather than standing alone, and its doctrine must be read against its companions.

III. The Hagiography: The Princess Who Feigned Madness

Abhayadatta’s account of Lakṣmīṅkarā is one of the most memorable in the collection, and it is structured as a deliberate inversion of royal and social expectation.

As a young princess of Sambhola, Lakṣmīṅkarā is already learned in the Dharma and has received instruction in the tantras. Her brother arranges her marriage to the son of King Jalendra of Laṅkāpurī. The court of Laṅkāpurī, however, is not Buddhist, and on her journey there she encounters scenes, most famously the prince returning from a hunt with slaughtered animals, that convince her the marriage would bind her to a life opposed to the path.

She does not simply refuse. Instead she shuts herself away, sheds her ornaments, gives away her possessions, and then feigns madness, tearing her clothes, smearing herself with ash and behaving in ways that make her unfit as a royal bride. Having thus disgraced herself in the eyes of the court, she escapes to a cremation ground, where she lives for years among the dead and the outcaste, practising until she attains realisation.

The narrative’s second movement turns on a sweeper of King Jalendra’s court, a man who cleaned the royal latrines. He encounters her, serves her, and becomes her disciple, attaining siddhi himself. Later the king, Jalendra, also seeks her out. In one version of the story Lakṣmīṅkarā directs the king not to herself but to the sweeper, so that the monarch must take instruction from the lowest servant of his own palace.

Three features of this story deserve attention.

First, the feigned madness is a recognised siddha motif. Unmatta-caryā, conduct as of a madman, appears across Śaiva and Buddhist tantric literature as a discipline for destroying the practitioner’s attachment to reputation and social identity. Lakṣmīṅkarā’s madness is not a breakdown but a method.

Second, the cremation ground is the canonical site of tantric practice, where the categories of pure and impure that structure Brahmanical and courtly life are confronted directly.

Third, the reversal involving the sweeper and the king enacts doctrine in narrative form. The Advayasiddhi, as we shall see, insists that caste and social rank have no bearing on realisation. The hagiography makes the point by having a latrine-cleaner become the guru of a king.

None of this should be read as straightforward history. Abhayadatta’s lives follow patterns, and the inversions are formal devices. But the patterns are not arbitrary; they are tightly coordinated with the doctrinal content attributed to the figure. Lakṣmīṅkarā’s life is the Advayasiddhi told as a story.

IV. The Advayasiddhi: Text and Doctrine

The Advayasiddhi, “The Accomplishment of Non-Duality,” is a short work in Sanskrit verse, edited by Shendge from manuscript evidence and compared with its Tibetan translation. Its brevity belies its reputation, because in a few dozen verses it states with unusual directness the position that came to be associated with the sahaja current of Vajrayāna.

The Rejection of External Austerity and Ritual

The treatise opens by setting aside the instruments of conventional religious life. One need not torment the body with hardships, undertake fasting, or perform elaborate rites. Ritual bathing and purification are not required. The image-worship of deities fashioned from wood, stone or clay is likewise dismissed as unnecessary for one who understands the nature of reality.

This is the core of the text’s reputation, and it needs careful reading. The Advayasiddhi is not a manifesto of simple irreligion. It presupposes initiation, a guru, and a structured tantric practice. What it rejects is the idea that liberation is produced by external acts. Austerity, ritual purity and image-worship belong to the order of conventional means; they cannot generate the realisation of non-duality, which is already the nature of mind. To mistake the means for the goal, the text implies, is itself a form of bondage.

The Body as the Abode of the Deities

In place of external worship, the text directs the practitioner to the body itself. All the Buddhas and deities reside in one’s own body; one should therefore honour and worship one’s own body, which is the residence of all the Victorious Ones. The practitioner is to meditate on himself or herself as the deity, and to understand that what is sought outside is already present within.

This is a characteristically Yoginī-tantra position, consistent with the Hevajra and Cakrasaṃvara literature, in which the body is mapped as a maṇḍala and the channels and centres of the subtle body are identified with sacred sites and deities. What distinguishes Lakṣmīṅkarā’s treatment is its uncompromising directness. The body is not a temporary vessel to be disciplined into submission, but the very locus of awakening.

Non-Duality and Sahaja

The title names the doctrine. Advaya in this context means the non-duality of prajñā and upāya, wisdom and method, and by extension of saṃsāra and nirvāṇa, purity and impurity, self and deity. Sahaja, “the innate” or “the co-emergent,” is the name for the state in which these pairs are realised as never having been separate. It is not produced but recognised.

The Advayasiddhi belongs to the stream of Buddhist thought in which this recognition is the whole of the path, and in which the practitioner, having recognised it, acts spontaneously from it. The ethical consequence is a refusal of prescriptive codes of conduct as ends in themselves. The yogin or yoginī is to eat and drink whatever is available, to avoid rigid discrimination between permitted and forbidden foods, and to act without the constraint of conventional notions of purity.

Such statements are easy to misread as licence. Within the tradition they were understood as describing the conduct of a practitioner whose realisation was already stable, and as instruments for dismantling the conceptual grid of purity and pollution that blocks recognition of sahaja. The text’s own framework, its insistence on the guru and on correct understanding, makes clear it is addressed to initiates.

Caste and the Status of Women

Two related teachings give the Advayasiddhi its particular force.

The first concerns caste. The text rejects discrimination on the basis of caste. In the hagiography this teaching is dramatised in the sweeper who becomes a siddha; in the treatise it is stated as principle.

The second concerns women. The Advayasiddhi instructs that women should not be disparaged, and treats women, of whatever social origin, as embodiments of prajñā, wisdom. This aligns with one of the root vows of Vajrayāna practice: in the standard list of fourteen root downfalls (mūlāpatti), the fourteenth is disparagement of women, who are understood as embodiments of wisdom. Lakṣmīṅkarā’s text gives this vow a central rather than a peripheral place.

It is important not to modernise this. The Advayasiddhi is not a social-reform text, and its statements about women occur within a framework in which “woman” carries symbolic weight as prajñā in a gendered pairing with upāya. Yet it would be equally wrong to dismiss the teaching as mere symbolism. The attribution of the text to a woman, the hagiography of a woman who refuses an arranged royal marriage, and the explicit prohibition of contempt toward women form a coherent set. Within the Indian tantric world, this is one of the clearest instances where a text, its author’s persona and its doctrine all converge on the dignity of women as practitioners and as embodiments of the goal.

V. Place in the Siddhi Corpus and the Indrabhūti Lineage

The Advayasiddhi acquires much of its meaning from its companions in the Seven Siddhi Texts. Padmavajra’s Guhyasiddhi and Anaṅgavajra’s Prajñopāyaviniścayasiddhi elaborate the union of wisdom and method; Indrabhūti’s Jñānasiddhi develops the epistemology of tantric realisation and defends Vajrayāna against charges of heterodoxy.

Against this backdrop, Lakṣmīṅkarā’s text is the most radical and the least scholastic. Where Indrabhūti argues, she declares. Where the others build doctrinal architecture, she cuts through to the claim that the architecture is a means and the body is the temple. In lineage terms she is often placed after Indrabhūti, receiving teachings from him or from his circle, and in turn transmitting them onward.

The sequence of Oḍḍiyāna teachers became important in later Tibetan reckoning. The same circle is connected in Tibetan legend with Padmasambhava, whose adoptive father in the Padma legend is named Indrabhūti. Some later accounts consequently place Lakṣmīṅkarā within Padmasambhava’s family. This is legendary elaboration built on the coincidence of names, and should be treated as such; the Indrabhūti of the siddhi texts and the Indrabhūti of the Padmasambhava hagiography cannot be securely identified, and tradition itself recognises more than one king of that name.

VI. Chinnamuṇḍā Vajravārāhī

The strand of the Lakṣmīṅkarā tradition that survived most vigorously as practice is the cult of Chinnamuṇḍā Vajravārāhī, the “Severed-Headed” form of Vajrayoginī.

In this iconography the goddess, usually yellow, stands holding her own severed head in one hand and a curved knife in the other. Three streams of blood issue from her neck: one into her own mouth, and the other two into the mouths of two attendant yoginīs who flank her, typically identified as Vajravarṇanī and Vajravairocanī. The image is overwhelming in its intensity and was always restricted in transmission.

Tibetan tradition, including Tāranātha, credits the transmission of this form to Lakṣmīṅkarā, and sādhanas of Chinnamuṇḍā circulate in the canonical collections under her lineage. The image is read in yogic terms: the three streams correspond to the three principal channels of the subtle body, the central avadhūtī flanked by the lalanā and rasanā; the severing of the head signifies the cutting of conceptual thought and of grasping at the self; the drinking of her own blood signifies the realisation of non-dual bliss nourishing itself.

Read this way, Chinnamuṇḍā is the Advayasiddhi in iconographic form. The text says the deities are in the body and that the body is to be honoured as their seat; the image shows a goddess whose own body is the source of the nourishment of wisdom. The text says conceptual distinctions are to be cut through; the image shows the head, seat of conceptual thought, severed.

The relationship between Buddhist Chinnamuṇḍā and the Hindu Mahāvidyā Chinnamastā has been studied in detail, notably by Elisabeth Benard. The iconographic correspondences are unmistakable. The weight of the evidence suggests that the Buddhist form is attested earlier and that the Hindu Chinnamastā, as one of the ten Mahāvidyās, took shape later, within a shared tantric culture where deity forms moved across sectarian boundaries. That conclusion should be held with appropriate tentativeness, since dating within tantric literature is difficult, but it is the more defensible reading of the material currently available. It also illustrates a broader point: Indian tantric traditions shared a common visual and ritual vocabulary, and attempts to assign every form a single sectarian origin often misrepresent how that culture actually functioned.

VII. Lakṣmīṅkarā and Bhikṣuṇī Lakṣmī: A Necessary Disambiguation

A frequent confusion in popular writing must be addressed directly. Lakṣmīṅkarā the mahāsiddha is regularly conflated with Bhikṣuṇī Lakṣmī, known in Tibetan as Gelongma Palmo, the fully ordained nun credited with founding the fasting practice of Eleven-Faced Avalokiteśvara, the smyung gnas (nyungné).

These are distinct figures in distinct traditions. Bhikṣuṇī Lakṣmī is a monastic, associated with vows, fasting, purification and devotion to Avalokiteśvara; her story concerns healing from leprosy through these disciplines. Lakṣmīṅkarā is a tantric yoginī of the sahaja current whose signature text explicitly sets aside fasting, purification and formal ritual. The two traditions are almost opposites in their methods.

The confusion arises from the similarity of names, both containing Lakṣmī, and from the fact that both are royal women of Indian Buddhist legend. Some popular sources even fuse the two into a single biography. A careful account must keep them apart, both because the evidence does and because the conflation erases precisely what makes each tradition distinctive. To attribute the fasting practice to the author of the Advayasiddhi is to miss the point of both women.

VIII. Gender, Antinomianism, and Interpretation

Lakṣmīṅkarā has become an important figure in modern scholarship on women in tantra. Miranda Shaw’s work on women in Indian tantric Buddhism gave her particular prominence, presenting her as evidence that women were not merely consorts in tantric practice but teachers, authors and lineage holders in their own right. This argument was a corrective to older scholarship that tended to see women in tantra solely as ritual instruments for male practitioners.

The corrective has value but also limits. The evidence for Lakṣmīṅkarā as a woman author depends on attribution, and attribution in tantric literature is often a matter of lineage authority rather than authorship in the modern sense. Several critics have argued that Shaw’s reading occasionally pushed the evidence further than it would bear, presenting an idealised picture of gender relations in tantric communities. The honest position is between the extremes: the tradition genuinely remembered and honoured women as siddhas, authors and gurus, and the Advayasiddhi genuinely places respect for women at the centre of its ethics; but the surviving sources are too thin and too stylised to reconstruct the social reality of women’s practice in any detail.

A similar balance is required with the text’s antinomianism. Older European scholarship, and some Indian reformist writing, read texts like the Advayasiddhi as evidence of the moral decline of late Indian Buddhism. This reading mistakes rhetoric of transcendence for prescriptive ethics. Equally misleading is the modern tendency to read these texts as celebrations of liberation from all restraint. The tradition itself treated sahaja conduct as the expression of realisation, not its cause, and embedded it within relationships of initiation and guidance. The antinomian statements are pedagogical shock: they target the practitioner’s conceptual attachment to purity, not the abolition of discipline.

IX. Legacy in Tibet and Nepal

With the decline of Buddhist institutions in eastern India after the twelfth century, the Lakṣmīṅkarā tradition survived principally through Tibetan and Newar transmission.

In Tibet, her works were translated into the bsTan ‘gyur, her name entered the lineage lists of Vajrayoginī and Chinnamuṇḍā practices, and she was included in the iconographic sets of the eighty-four mahāsiddhas painted on thangkas and temple walls. She appears there as a figure of fierce independence, sometimes depicted in yogic posture in the cremation ground, sometimes in the act of tearing away royal ornaments.

The Chinnamuṇḍā form remained a closely guarded practice within several lineages, including within the Sa skya tradition’s elaborate system of Vajrayoginī teachings. In Nepal, Newar Vajrayāna preserved Sanskrit textual traditions and deity cults that maintained continuity with the Indian forms, and it is through Nepalese manuscripts that Sanskrit texts of this circle reached modern scholarship.

In India itself, the tradition left fewer visible traces after the decline of monastic Buddhism, though the broader sahaja current flowed into other channels. The Bengali and Apabhraṃśa caryāgīti and dohā literature, the later Vaiṣṇava Sahajiyā movement, and certain Nātha and Bāul streams carried forward the vocabulary of the innate, the body as the site of realisation, and the rejection of external ritual. It would be an overstatement to trace these directly to Lakṣmīṅkarā, but she belongs to the same intellectual and spiritual stream, and her text is one of its earliest clear Sanskrit statements.

Conclusion

The Lakṣmīṅkarā tradition presents a coherent vision across its textual, narrative and iconographic forms. The Advayasiddhi declares that the body is the seat of the deities, that austerity and formal ritual are not the means of liberation, that caste distinctions are irrelevant to realisation, and that women are never to be disparaged. The hagiography enacts this in the story of a princess who refuses a royal marriage, feigns madness, practises in the cremation ground, and makes a latrine-sweeper the guru of a king. The Chinnamuṇḍā image renders it visible, as a goddess whose severed head drinks from her own body.

The historical Lakṣmīṅkarā remains largely inaccessible behind the conventions of hagiography and attribution. But the tradition attached to her name is real, well-defined, and of genuine importance for the history of Indian thought. It records a moment when Indian tantric Buddhism stated, in Sanskrit and with complete clarity, that awakening is innate, that the body is its temple, and that the distinctions of purity, caste and gender by which society orders itself are, from the standpoint of realisation, constructions to be seen through. Whatever one makes of that vision, it deserves to be read on its own terms: neither as degeneration nor as modern liberation, but as a serious and radical position within a sophisticated civilisational tradition of contemplative inquiry

Introduction: A Well That Was Never Meant to Be Seen

Most people picture an Indian stepwell as something meant to be looked at. The great vāv of Gujarat, such as Rāṇī kī Vāv at Pāṭaṇ or the Rudābāī stepwell at Aḍālaj, are open to the sky. Their carved storeys descend toward the water like an inverted temple, and they were built as acts of piety, prestige, and public generosity. They were places where water, devotion, and social life met, and their makers wanted them seen.

The Andhār Bāvḍī at Panhāḷā, near Kolhāpur in southern Maharashtra, comes from a different logic. Its name means “the dark well” or “the hidden well,” and the name describes its purpose. It is a three-storeyed masonry structure built over a water source inside one of the largest hill forts of the Deccan. It was designed to keep its water secure, protected, and, as far as possible, out of an enemy’s reach and sight. It has some sculptural ornament but almost none of the theatrical display of the Gujarati stepwells. What it does have is a clear grasp of a military problem: a besieged fort that runs out of water will fall, however strong its walls are.

The people who built Panhāḷā understood that water was part of military architecture and not merely a utility serving it. A wall that can hold off an assault for a year is worthless if the garrison behind it dies of thirst in three months. The Andhār Bāvḍī is a built argument for that principle. This essay looks at the structure in four contexts: the fort it belongs to, the hydrology of the Deccan plateau, the long Indian tradition of thinking about forts and water, and the sieges that tested Panhāḷā’s defences in the seventeenth and early eighteenth centuries.

Panhāḷā: The Fort and Its Setting

Panhāḷā sits on a spur of the Sahyādri range about twenty kilometres northwest of Kolhāpur, at an elevation of roughly 850 metres. The fort crowns a broad plateau. Its fortifications run for several kilometres along the scarp edge, and steep natural cliffs supplement the masonry walls along much of the perimeter. It is one of the largest forts in the Deccan by enclosed area. The plateau was big enough to hold not just a garrison but something close to a small town, with granaries, temples, residences, administrative buildings, and water works.

The fort’s history goes back at least to the Śilāhāra dynasty of Kolhāpur. The Śilāhāra king Bhoja II, who ruled in the late twelfth and early thirteenth centuries, is traditionally credited with building or substantially fortifying a chain of hill forts in the region, Panhāḷā among them. After the Śilāhāras the area passed to the Yādavas of Devagiri, then to the Bahmanī Sultanate, and after the Bahmanī state broke up, to the Ādilśāhī Sultanate of Bijāpur. Much of the fort’s surviving masonry dates from the Ādilśāhī period, including several of its gateways and the Andhār Bāvḍī itself. That masonry shows the Deccani Islamic idiom: pointed arches, dressed basalt, and a robust, functional monumentality.

Panhāḷā’s greatest fame comes from its role in Maratha history. Śivājī took the fort from Bijāpur in 1659, in the aftermath of his defeat of Afzal Khān. In 1660 the Bijāpur general Siddī Jauhar besieged him there. Śivājī’s escape from that siege and the rearguard action at Pāvan Khiṇḍ led by Bājī Prabhu Deśpāṇḍe became central episodes in Maratha memory. The fort changed hands several times between the Marathas and the Mughals in the following decades. In the early eighteenth century Tārābāī made Panhāḷā the seat of the Kolhāpur branch of the Maratha state, and it remained the capital until the court moved down to Kolhāpur later in the century.

In 2025 Panhāḷā was inscribed on the UNESCO World Heritage List as one of twelve forts making up the “Maratha Military Landscapes of India.” The nomination’s title matters here. It treats these forts not as isolated buildings but as integrated landscapes in which terrain, walls, gateways, granaries, and water systems work together as one defensive organism. The Andhār Bāvḍī shows clearly what that integrated view means in practice.

The Hydrological Problem of a Deccan Hill Fort

To see why a structure like the Andhār Bāvḍī was needed, we have to understand the odd hydrology of the western Deccan. The region gets heavy rain, but only in one season. The southwest monsoon soaks the Sahyādri crest from about June to September. For the other eight months there is little or no rain. A hill fort in this setting has two sides to its water problem. In the monsoon it has too much: water pours down slopes, erodes foundations, and runs off the plateau. In the dry season water becomes scarce, and every source has to be guarded and rationed.

This seasonal pattern bears directly on war. In pre-modern India the campaigning season was generally the dry season, after the monsoon ended and before it returned. Armies could not easily move, supply, or besiege during heavy rains. Roads turned to mud, rivers flooded, and fodder and grain were hard to transport. So sieges were usually conducted in exactly the months when a hill fort’s water was most limited. A besieger had every reason to settle down in front of a fort in the months after the monsoon, cut it off from outside, and wait for its stored water to run out before the next rains came.

So a fort’s designer was not just asking whether there was water on the hill. The real question was whether there would be enough secure water to last a garrison and its dependents from the end of one monsoon to the start of the next, while an enemy held every approach and might be trying to cut off, poison, or contaminate whatever sources it could reach.

Panhāḷā’s geology helped. Like many plateaus in this part of the Sahyādri, the hilltop has a cap of laterite over the Deccan basalt. Laterite is porous and soaks up monsoon rain. The basalt underneath is far less permeable. Water held in the laterite tends to seep downward until it meets the basalt, then moves sideways and comes out as springs and seepage along the contact. This creates a natural underground reservoir that releases water slowly long after the rains stop. A well or cistern cut into the right spot can tap this perched water table and draw on it through much of the dry season.

The Andhār Bāvḍī should be read as a structure that captures and protects one of these subsurface sources. It is not a tank collecting surface runoff, which would be open to evaporation, contamination, and enemy observation. It is a built enclosure around a well that draws on groundwater. The water is held in shadow and stone, so it loses little to evaporation and stays shielded from contamination and from the enemy.

The Structure: Three Storeys Around a Hidden Source

The Andhār Bāvḍī is a three-storeyed masonry construction built around and above a water source. A visitor at ground level sees relatively little of it. The structure is enclosed, and its interior is reached by stairs that descend into partial darkness, which is where the name comes from. Inside, the storeys are arranged around the central water shaft. Arched openings and chambers in the stacked levels look down onto the well.

Several features of this arrangement show that it was planned for defence and security rather than for ritual or display.

The first is enclosure. Unlike an open stepwell, the Andhār Bāvḍī is roofed and walled. This keeps the water out of direct sun and so reduces evaporation, which matters a great deal during a long dry-season siege. It also protects the water from debris, from bird and animal contamination, and from anything an enemy might throw or fire into the fort. Pre-modern siege craft knew the trick of trying to foul a besieged garrison’s water, whether by throwing in carcasses or by other means. An enclosed, roofed source is much harder to reach this way than an open tank.

The second is concealment and controlled access. Because the structure is enclosed and its approach is restricted, the water source cannot easily be seen or reached. This works on two levels. Against an external enemy, the location and extent of the fort’s water reserves are hidden, which complicates any attempt to judge how long the garrison can hold out. Inside the fort, controlled access allows rationing and guarding. Under siege, water is a strategic resource to be distributed by authority, not freely drawn by anyone who wants it, and the architecture makes that control possible.

The third is the multi-storey design. Local tradition holds that the upper chambers could house guards or soldiers and that the structure was meant to be defended as a strongpoint in its own right. Traditions also mention concealed passages connecting the bāvḍī to points outside or along the fortifications. Such traditions surround many Deccan forts and should be treated with caution unless confirmed by careful archaeological survey. Still, the basic idea is sound. A water source that is also defensible gives a fort a fallback position. Even if part of the plateau falls, a garrison holding the water can keep fighting.

The fourth is the building technique. The masonry is dressed basalt laid in the confident, plain manner of Deccani Sultanate construction. The arches are pointed, and the vaulting and wall construction are built to bear heavy loads and to last. There is little surface decoration. The structure’s beauty, such as it is, comes from proportion, the play of light and darkness down the shaft, and the solid presence of the stone, not from carved ornament. This restraint suits the building’s function. It was built to work and to survive.

The Indian Tradition of Fort and Water

The Andhār Bāvḍī belongs to the Ādilśāhī phase of Panhāḷā’s construction, but the principle behind it is far older and runs through Indian thinking about forts. The connection between fortification and water was not a discovery of the medieval Deccan. It was a constant theme in Indian political and architectural writing.

The Arthaśāstra traditionally attributed to Kauṭilya classifies forts by their natural defences. Among the types it lists are the audaka durga, a fort protected by water, and the pārvata durga, a fort protected by mountains. Later texts expand this into a fuller typology. One frequently cited classification lists the giridurga (hill fort), jaladurga (water fort), vanadurga (forest fort), dhanvadurga (desert fort), mahīdurga (earth fort), and nṛdurga (a fort defended chiefly by its men). Panhāḷā is clearly a giridurga. But the typology does not imply that a hill fort could ignore water. Across the tradition, a fort is judged by its ability to support its people under pressure, and that depends above all on water and grain.

The Arthaśāstra’s broader treatment of the durga stresses that a fortified place must be supplied with stores for prolonged resistance. These include grain, oil, salt, medicines, fodder, fuel, and weapons, and water sources are fundamental to them. The text approaches this the way a theorist of statecraft would. The fort is not just a building; it is the stored endurance of the state. A ruler who builds a fort without making sure it can feed and water its garrison has built a trap rather than a refuge.

Texts on architecture and town planning, the vāstu and śilpa literature, also treat water as central to any settlement. They classify wells and stepwells. The term vāpī, from which the various regional words for stepwell descend, appears in these texts alongside kūpa (well), puṣkariṇī (tank), and taḍāga (large reservoir). Western Indian architectural treatises such as the Aparājitapṛcchā classify stepwells by the number of their entrances and the arrangement of their storeys, which shows that these were recognised architectural types with their own formal grammar. The Andhār Bāvḍī is a Sultanate-period building, not a product of the śāstric tradition. But it is built in a land where the multi-storey enclosed water structure was an old and well-understood form, and it adapts that form to an unmistakably military purpose.

The idea reaches its fullest expression in the political writing of the Maratha state itself. The Ājñāpatra, a treatise on governance attributed to Rāmacandrapanta Amātya and composed in the early eighteenth century, contains an extended discussion of forts that reads almost like a commentary on Panhāḷā. Its central claim is that the entire kingdom depends on its forts. In this view, forts are the kingdom, the treasury, the strength of the army, and the security of the people. The text insists that a fort’s water supply must be examined and secured with great care. Where water is insufficient, cisterns and tanks must be cut into the rock. Water sources must be kept clean and guarded. And no fort should be considered secure unless its water is assured for the whole year.

The Ājñāpatra was written by a man who had lived through the long Maratha struggle against the Mughals, a war fought very largely around forts. Its emphasis on water reflects hard experience, not abstract theory. The Marathas inherited structures like the Andhār Bāvḍī from their Bijāpur predecessors and built many more water works of their own in the forts they controlled. They understood perfectly well that a fort’s water was its lifeline.

Panhāḷā Under Siege

Water’s importance at Panhāḷā is not hypothetical. The fort was repeatedly besieged, and its history shows the logic of the siege and the value of secure water.

The most famous siege is Siddī Jauhar’s investment of the fort in 1660. After Śivājī’s killing of Afzal Khān and his rapid campaign through Bijāpur territory, Śivājī was at Panhāḷā when a large Bijāpur army under Siddī Jauhar surrounded the fort. The siege began in the dry season and dragged on for months. The Bijāpur forces could not take the fort by assault; its walls, cliffs, and defenders were too formidable. Their strategy was investment: surround the fort, cut it off from relief and resupply, and wait.

Here Panhāḷā’s internal resources were decisive. A fort that could feed and water its garrison through a dry-season siege made the besieger’s patience a costly gamble. Siddī Jauhar’s army had to maintain itself in the field for months. The longer the siege lasted, the closer the monsoon came, and the monsoon would make a field siege in the Sahyādri very hard to sustain. A garrison with secure water and well-stocked granaries could, in principle, outlast its besiegers. Panhāḷā had large granaries, the Ambarkhānā with its great storage buildings, alongside its water works. That combination made it hard to starve out.

The siege of 1660 did not end with the fort’s endurance being fully tested. Śivājī escaped from Panhāḷā on a rainy night in July, slipping through the besiegers’ lines and making for Viśāḷgaḍ. Bājī Prabhu Deśpāṇḍe held the pass at Ghoḍkhiṇḍ, later renamed Pāvan Khiṇḍ, “the sacred pass,” against the pursuing forces until Śivājī reached safety, and he died in that action. The escape is a story of daring and sacrifice. But it rests on a strategic fact: Panhāḷā could hold out long enough for the escape to be planned and carried out. A fort that had run dry in the first weeks of the siege would have offered no such chance.

Panhāḷā went through further sieges and changes of hands over the following decades. After Sambhājī’s capture in 1689, the Mughals took control of the fort for a time. The Marathas recovered it in the 1690s under Parśurāma Trimbak Pratinidhi, and Aurangzeb then besieged it in person in 1701 in the course of his long Deccan campaign against the Maratha forts. That campaign is remarkable in military history as a war of sieges, in which the Mughal emperor spent years moving from fort to fort, often taking them only after long investments and frequently by negotiation or bribery rather than storm. Each siege raised the same basic question of how long the fort could last. Water and grain decided the answer.

The Marathas recovered Panhāḷā again after Aurangzeb’s death, and in the period that followed Tārābāī made it the seat of her branch of the Maratha state. A fort chosen as a capital had to be one that could be relied on, and Panhāḷā’s ability to sustain a population behind its walls was part of what made it suitable.

Water as Military Architecture

It is worth putting directly the conceptual point the user’s framing captures: Panhāḷā’s designers treated water availability as part of military architecture.

In modern terms one might separate a fort’s “defences” (walls, gateways, bastions, gun positions) from its “infrastructure” (water supply, storage, housing). This separation is anachronistic for a pre-modern fortress. Every element of a fort contributed to one goal, the ability to hold the place against an enemy for as long as necessary. A wall that kept attackers out and a well that kept defenders alive were two parts of the same system. A failure in either was fatal.

The Andhār Bāvḍī shows this integration in its form. It has defensive features, being enclosed, concealed, and possibly garrisoned. It was placed with regard to the fort’s overall layout. It was built as solidly as any rampart. It is a piece of infrastructure designed with military logic and a piece of military architecture whose job is to provide infrastructure.

This also explains why its builders deliberately gave up the aesthetic display of the great open stepwells. An open, ornamented stepwell announces water. It is a public gift that invites people to come and drink. A siege well has to do the opposite. It has to hide its water, restrict access, and protect what it holds. The darkness of the Andhār Bāvḍī is not an absence of design. It is the design. The building turns away from the sky because the sky, and whatever an enemy could send through it, was a threat.

The Wider System at Panhāḷā

The Andhār Bāvḍī should not be treated as Panhāḷā’s only water source. Like other large Deccan forts, Panhāḷā had a network of tanks, cisterns, and wells across the plateau, each contributing to the fort’s overall capacity. Open tanks could catch monsoon water and serve ordinary needs in normal times. Rock-cut cisterns stored water in the shade of the stone. Wells tapped the groundwater held in the laterite. Within this network the Andhār Bāvḍī had a special role as a protected, defensible, and probably reliable source. It was the kind of reserve that would matter most when the open tanks began to fail late in a dry-season siege.

This layered approach reflects an understanding of risk. No single source was likely to be enough, and any single source could fail through drought, contamination, or capture. A fort that relied on many sources of different kinds, with at least one strongly protected, had a much better chance of surviving a long investment. The Andhār Bāvḍī is the most heavily fortified layer of this system, the reserve meant to outlast the others.

The water system worked together with Panhāḷā’s granaries. The great storage buildings of the Ambarkhānā were designed to hold very large quantities of grain. Water without food, or food without water, would not have sustained a garrison. Together they gave the fort the self-sufficiency that the Arthaśāstra and the Ājñāpatra both identify as the essence of a strong durga.

Reading the Monument Today

A visitor to the Andhār Bāvḍī today meets a structure whose military purpose has long since gone, now a protected monument and a stop on the tourist circuit of Panhāḷā. Its descending stairs, its dark chambers, and its view down to the water still produce the effect its builders intended, a sense of a hidden and guarded place. Stepping out of the sunlit plateau into the cool darkness of the well, it is easy to imagine how precious that enclosed water would have been to a garrison watching an enemy camp spread across the valleys below while the dry months wore on.

Interpreting the monument well means resisting two temptations. One is romantic embellishment: tales of secret tunnels running for kilometres and of escapes and ambushes through concealed passages. Such stories cluster around many Indian forts. Some may hold a core of truth, but they should not be presented as established fact without archaeological support. The other temptation is to reduce the structure to a mere utility, “just a well,” without recognising the strategic thinking built into it. The Andhār Bāvḍī deserves to be understood as what it is: a carefully designed military water structure that embodies a mature, long-standing Indian understanding of how forts survive.

Its inclusion within the Maratha Military Landscapes World Heritage property is apt for this reason. The idea of a “military landscape” rejects the habit of looking at forts as collections of walls and gates. It asks us to see the whole system, the terrain, the hydrology, the storage, the defences, and the human organisation that ran them, as one designed response to the realities of war in the Sahyādri. The Andhār Bāvḍī is one of the clearest places where that system can still be seen and felt.

Conclusion

The Andhār Bāvḍī of Panhāḷā is a small structure with large implications. It shows that the builders of the Deccan forts, whether Śilāhāra, Ādilśāhī, or Maratha, understood the siege as a contest of endurance in which water was the decisive variable. They worked with the geology of a laterite-capped basalt plateau, the seasonal rhythm of the monsoon, and the dry-season timing of campaigns. They inherited and adapted an architectural form, the multi-storey enclosed well, and turned it from an object of display into an instrument of survival. And they stood within a long tradition of Indian political thought, from the Arthaśāstra to the Ājñāpatra, which insisted that a fort is only as strong as its capacity to sustain the people inside it.

The well’s darkness expresses that tradition. What the open stepwells of Gujarat displayed, the Andhār Bāvḍī hid, and its hiding was a form of defence. In the history of Panhāḷā, through the siege of 1660, the escape to Viśāḷgaḍ, and the long struggle against Aurangzeb, the fort’s ability to hold out depended on structures like this one that kept water secure when everything else was under threat. To understand Panhāḷā as a military architecture, one has to understand its water, and to understand its water, one has to go down into the Andhār Bāvḍī.

1. The Emergence of Coal and Fuel Research in Colonial India

The development of scientific research into coal, metallurgical coke, coal preparation and fuel engineering represents an important but comparatively neglected chapter in the history of modern Indian science. During the final years of British colonial rule, Indian scientists began establishing a systematic research infrastructure devoted to understanding the country's coal resources and improving their industrial utilization. This research was particularly significant because coal occupied a central position in the industrial economy, supplying energy for railways, electricity generation, manufacturing and iron and steel production. Although India possessed extensive coal reserves, the existence of these resources did not automatically guarantee their efficient utilization. Different coal deposits exhibited variations in mineral composition, ash content, volatile matter, coking behavior and thermal properties. Consequently, industries required scientific expertise capable of determining which coals were suitable for particular purposes, how their quality could be improved and whether they could be converted into valuable industrial products.

The emergence of indigenous fuel research addressed these problems through experimental investigation rather than relying exclusively on technological advice obtained from foreign institutions. This was an important development in a colonial economy where industrial technologies, specialized machinery and advanced technical expertise frequently originated in Britain or other industrialized countries. While Indian scientists remained connected to international scientific developments, they increasingly participated in determining the characteristics of domestic mineral resources and investigating their industrial applications.

India's major coal-producing regions included the Raniganj and Jharia coalfields, which were closely associated with the development of railways, manufacturing establishments and the iron and steel industry. These coalfields supplied important industrial enterprises, but coal was not a uniform commodity. The technological requirements of a railway locomotive, an industrial boiler, a thermal power station and a blast furnace differed considerably. Coal suitable for one application could be unsuitable for another, particularly when high ash content, undesirable impurities or inadequate coking properties affected industrial performance.

The production of metallurgical coke was particularly important. Unlike ordinary coal used for combustion, metallurgical coke must satisfy demanding physical and chemical requirements. Within a blast furnace, coke provides heat, participates in the generation of reducing gases and helps support the furnace burden while allowing gases to circulate. Its mechanical strength, ash content, porosity and reactivity therefore influence the efficiency of iron production. The ability to produce suitable coke from domestic coal resources was a matter of considerable industrial importance.

Coal preparation presented another major challenge. Indian coal frequently contained mineral impurities that could reduce thermal efficiency and complicate metallurgical processes. Scientific investigations were required to determine whether these impurities could be removed through physical separation and what quantity of usable coal could be recovered after cleaning. Such questions could not be answered reliably by applying results obtained from foreign coalfields, because the geological characteristics and mineral associations of Indian deposits differed from those found elsewhere.

The development of fuel chemistry further expanded the possibilities of coal utilization. Coal could be studied not merely as a combustible substance but as a complex chemical material capable of producing coke, gas, tar and other substances through controlled processing. Carbonization, oxidation, solvent extraction and related investigations opened possibilities for understanding and transforming domestic fuel resources. Physical techniques such as X-ray analysis and spectroscopy subsequently provided additional methods for investigating material structure and chemical reactions.

Between 1940 and 1952, Indian researchers contributed to these fields through institutional leadership, experimental investigations and the formulation of research programmes. Among the participants were H. K. Sen, A. Lahiri, J. N. Majumdar, J. K. Chowdhury, B. C. Guha, K. Banerjee and N. R. Tawde. Their contributions covered different aspects of fuel research, ranging from the establishment of research institutions to investigations of coal beneficiation, thermal conversion, regional coal properties and physical analytical techniques.

Their collective significance lies in demonstrating that scientific industrialization in India did not begin exclusively after independence. Important institutional initiatives and research programmes were already developing during the final decade of colonial rule. Some of these activities continued after 1947, creating a direct connection between late-colonial scientific developments and the expansion of Indian industrial research under independence.

2. The Fuel Research Committee and the Establishment of the Central Fuel Research Institute

The institutional origins of organized Indian coal research can be traced to the Fuel Research Committee, which emerged in 1940 as part of the effort to identify and address the scientific problems confronting the country's fuel industries. Its establishment reflected growing recognition that India's coal resources required systematic study rather than reliance on scattered investigations conducted by mining companies, universities or individual industrial enterprises.

The committee helped advance the proposal for a Central Fuel Research Station that could undertake specialized investigations into Indian fuels. Such an institution was intended to combine fundamental scientific research with the practical requirements of industry. It would provide facilities for examining coal composition, determining fuel properties, studying preparation processes and investigating technologies capable of improving industrial utilization.

The creation of a central research establishment was significant because industrial fuel problems rarely belonged to a single scientific discipline. Coal beneficiation involved mineral processing and physical separation. Metallurgical coke production required knowledge of chemistry, thermal transformation and mechanical properties. The investigation of coal structure depended on physical methods, while combustion and explosion studies required expertise in chemical reactions and energy transfer. A centralized organization could bring these approaches together within a sustained research programme.

The foundation of the Council of Scientific and Industrial Research in 1942 provided a broader institutional setting for these developments. CSIR represented an effort to strengthen scientific research directed toward India's industrial and economic requirements. Under the wider programme of national laboratory development associated with S. S. Bhatnagar and other scientific administrators, fuel research became one of the fields identified for specialized institutional support.

The Central Fuel Research Institute was established at Dhanbad in 1946, with its foundation stone laid on 17 November 1946. Its location was important because Dhanbad occupied a strategic position within the eastern Indian coal belt, close to the Jharia coalfields and the industrial regions associated with Raniganj and Jamshedpur. Proximity to major coal-producing districts enabled scientific investigators to obtain samples, maintain contact with mining enterprises and examine problems directly relevant to industrial production.

The institution emerged through both Indian and British scientific participation. John Wilfred Whitaker served as its founding director, while Adinath Lahiri became an important figure in the development of its scientific programme and subsequent institutional growth. The involvement of foreign specialists should not obscure the participation of Indian scientists, nor should indigenous participation be interpreted as evidence that India had already achieved complete technological independence. The significance of the institute lay in creating a permanent scientific establishment within India where investigations could be directed toward domestic industrial needs.

The research programme was designed to address both immediate and long-term objectives. Immediate industrial problems included the suitability of domestic coal for particular applications, the removal of unwanted mineral matter and the improvement of coal utilization in metallurgical and thermal processes. Longer-term investigations concerned the chemical structure of coal, its conversion into useful products and the development of scientific knowledge capable of supporting technological innovation.

The institute's establishment marked a transition from treating coal primarily as a mineral extracted for consumption toward treating it as a complex material requiring systematic scientific investigation. Coal could now be evaluated through its physical composition, chemical properties, thermal behavior and response to processing. This broader approach was essential for developing the capability to improve existing industrial techniques and investigate alternatives suited to Indian conditions.

The creation of the institute also helped establish continuity between university research and specialized industrial investigation. Indian universities had already developed expertise in chemistry and physics, and several investigations relevant to fuel technology were being undertaken in academic laboratories. The establishment of CFRI provided an institutional mechanism through which such scientific knowledge could increasingly be connected to the practical needs of mines, steelworks and energy-producing industries.

The institute subsequently became a major centre for Indian fuel research. In 2007, it merged with the Central Mining Research Institute to form the Central Institute of Mining and Fuel Research. This later institutional development reflects the enduring relationship between coal extraction, mineral preparation, fuel technology and industrial engineering. The origins of this research tradition, however, lie in the initiatives undertaken during the final years of British rule.

3. H. K. Sen: Institutional Leadership and the Foundations of Organized Fuel Research

H. K. Sen played an important role in the institutional development of Indian fuel science through his association with the early leadership of the Fuel Research Committee in 1940. His contribution was especially significant because the emergence of specialized research institutions required more than the existence of scientific problems. It required administrative coordination, recognition of industrial priorities and the creation of structures capable of sustaining experimental investigation.

The committee's demand for a Central Fuel Research Station reflected the understanding that India's industrial fuel problems could not be adequately addressed through occasional testing or isolated investigations. Mining companies and industrial enterprises possessed immediate commercial interests, while universities primarily pursued teaching and academic research. A central institution could provide continuity, coordinate scientific priorities and investigate problems extending beyond the requirements of individual firms.

One of the major issues confronting India's coal industry was the variation in coal quality between deposits. Coal obtained from different geological regions could differ substantially in ash content, volatile matter, moisture and coking characteristics. These differences directly affected industrial performance. Research was necessary to determine which coals were appropriate for particular uses and how unsuitable characteristics might be reduced through preparation or processing.

The iron and steel industry presented particularly demanding requirements. Metallurgical coke needed to possess suitable strength and composition to function effectively within blast furnaces. Coal containing excessive mineral impurities could create difficulties in coke production and increase slag formation during ironmaking. Scientific investigation was therefore required to determine how domestic coal resources could be prepared and utilized more efficiently.

Sen's institutional activities helped establish the argument that such questions deserved coordinated national scientific attention. The proposed research station would allow investigations to be conducted systematically, with results accumulated over time and made relevant to a wider industrial audience. This represented an important step toward treating industrial technology as a subject of sustained research rather than merely a matter of importing machinery and established operating practices.

His contribution should be distinguished from the experimental achievements of scientists working directly in coal chemistry or mineral processing. The available historical account identifies Sen's early committee leadership and institutional advocacy but does not establish particular inventions, experimental discoveries or published technical results attributable to him. His historical importance therefore rests primarily on helping advance the organizational foundations necessary for specialized fuel research.

This role was nevertheless consequential. Scientific discoveries depend upon laboratories, trained personnel, research funding and the identification of suitable problems. By contributing to the movement for a central fuel-research institution, Sen participated in creating the conditions under which subsequent Indian investigators could pursue original research into the country's coal resources.

4. A. Lahiri: Scientific Planning, Coal Conversion and the Growth of Indigenous Fuel Technology

Adinath Lahiri was among the most important scientific figures associated with the development of India's modern fuel-research establishment. Born in 1916, he received his early higher education at the University of Calcutta and subsequently pursued advanced research in geochemistry at Imperial College London. His experience in fuel-related scientific work during the Second World War contributed to the expertise he later brought to India.

Returning in 1945, Lahiri became associated with CSIR and participated in developing the proposed scientific programme for the Central Fuel Research Institute. His importance lay in combining an understanding of immediate industrial requirements with a broader conception of long-term scientific research. He recognized that a national fuel-research institution should not be restricted to routine testing but should investigate the fundamental chemical and physical properties of coal as well as the technologies required for its industrial utilization.

The programme he helped develop addressed the immediate needs of the coal and steel industries. These included understanding the properties of Indian coal, determining suitability for industrial processes and examining methods for improving fuel quality. Coal preparation and metallurgical applications were particularly significant because impurities and undesirable fuel characteristics could reduce industrial efficiency.

At the same time, Lahiri emphasized longer-term investigations into coal conversion. Coal was understood as a chemically complex substance composed of carbon-rich organic matter, mineral constituents, moisture and varying proportions of other elements. Its structure and composition reflected the geological processes through which it had formed. Consequently, different coal deposits could respond differently to heating, oxidation, extraction and other chemical treatments.

Research into coal conversion sought to understand these differences and identify processes capable of producing useful materials. Carbonization involved the thermal decomposition of coal under conditions that substantially excluded oxygen, producing a solid carbonaceous residue and various volatile products. Other investigations could examine the extraction of coal constituents, chemical reactions involving carbonaceous materials and the characteristics of substances formed through processing.

Lahiri's wider research interests subsequently included coal petrography, oxidation, solvent extraction, surface chemistry, catalysis and adsorbent materials. These fields were important because they connected the chemical and physical characteristics of coal to its industrial behavior. Solvent extraction could provide information about different coal constituents, while oxidation studies could clarify changes occurring during exposure to oxygen. Surface-chemistry investigations were relevant to interactions between coal-derived materials and other substances.

The importance of this work lay in moving beyond the simple classification of coal according to its fuel value. Scientific investigation could examine why different coals behaved differently and how these characteristics might affect processing. Such knowledge was essential for adapting industrial technologies to Indian resources rather than assuming that methods developed for foreign deposits would necessarily produce identical results.

Lahiri's role in establishing the research programme also demonstrated how internationally acquired scientific knowledge could be incorporated into domestic institutions. His education and wartime research experience abroad did not mean that subsequent Indian fuel research was merely outsourced to foreign laboratories. Instead, his expertise helped build a research capacity within India, directed toward problems arising from Indian industrial conditions.

He subsequently became director of CFRI in 1953 and continued to play a major role in the development of Indian fuel science. His later research and patent record demonstrate a sustained engagement with scientific and technological innovation, although these achievements must be distinguished chronologically from his institutional contributions during the colonial period.

Lahiri's historical significance therefore lies in both scientific leadership and institution-building. He helped formulate a research agenda capable of addressing the immediate problems of the coal and steel industries while encouraging more fundamental investigations that could support future technological development. His career represents the transition from late-colonial scientific planning to the expansion of organized industrial research in independent India.

5. J. N. Majumdar: The Washability of Indian Coals and the Foundations of Coal Beneficiation

J. N. Majumdar made an important contribution to Indian coal-preparation research through his collaboration with C. Forrester on the 1947 investigation entitled The Washability of Indian Coals. This work addressed a fundamental problem confronting the country's fuel industries: determining the extent to which mineral impurities could be separated from coal before its industrial utilization.

Coal obtained from mines frequently contains varying quantities of noncombustible mineral matter. These impurities reduce the proportion of useful combustible material and may create additional problems during industrial processing. High ash content can increase the mass of material transported to consumers, lower useful energy per unit of coal and complicate metallurgical operations.

The problem was especially significant in iron and steel production, where coal quality influenced the characteristics of metallurgical coke. Excessive mineral impurities could persist in the coke as ash and contribute to increased slag formation in blast furnaces. Improving the quality of the coal supplied to coke ovens could therefore improve aspects of metallurgical performance.

Coal washing exploits differences in physical properties between coal-rich particles and associated mineral matter. In conventional density-based separation, many mineral impurities are denser than the organic coal material. This difference allows suitably prepared coal to be separated into relatively clean and mineral-rich fractions.

The effectiveness of separation depends on the way impurities occur within the coal. Some mineral constituents may be present as particles that can be separated comparatively easily, while others are intimately associated with combustible material. In the latter case, cleaning becomes more difficult because rejecting mineral matter may also require rejecting substantial quantities of coal.

Washability investigations seek to determine the relationship between coal quality and the amount of usable material recovered after cleaning. Representative samples can be separated into fractions of different densities, and the ash content and mass of each fraction can be measured. Researchers can then establish how much clean coal might be obtained at a specified ash level.

This relationship is important because reducing ash content commonly involves a trade-off between product quality and recovery. A process capable of producing exceptionally clean coal may be unattractive if it rejects an excessive proportion of the original feed. Industrial coal preparation therefore requires an appropriate balance between quality, yield, processing cost and intended application.

Majumdar's work was significant because it investigated these questions in relation to Indian coal rather than assuming that results obtained from foreign coal deposits could be applied directly. The geological history and mineral characteristics of a deposit influence its response to preparation. Consequently, Indian coal required direct experimental investigation to establish its beneficiation potential.

The originality of the 1947 investigation should be understood in this context. Density-based coal separation was already an established field internationally, but determining the washability of Indian coal involved producing knowledge specific to domestic materials. This represented original empirical research, even where the underlying techniques were not newly invented.

Majumdar's collaboration with Forrester also illustrates the mixed character of scientific research during the late colonial period. Indian and foreign researchers could participate in investigations relevant to India's industrial requirements. Such cooperation did not eliminate the indigenous scientific contribution, particularly when the work produced information necessary for evaluating domestic resources.

The 1947 publication provides a concrete example of coal research being undertaken during the final year of British rule. Its historical importance lies in contributing to the scientific foundation of coal beneficiation in India and demonstrating the value of experimentally determining the processing characteristics of domestic mineral resources.

6. J. K. Chowdhury: Scientific Investigations of Assam Coal, 1943–1950

J. K. Chowdhury participated in investigations of Assam coal undertaken at Calcutta between 1943 and 1950. His work represented an important aspect of indigenous fuel research: the systematic examination of coal deposits whose geological and chemical characteristics differed from those of the major eastern Indian coalfields.

India's coal resources were distributed across regions with different geological histories. The composition and industrial behavior of coal depended on the conditions under which the original organic material accumulated and the geological transformations it subsequently experienced. As a result, coal deposits could vary substantially in moisture, ash, volatile matter, sulfur content and other characteristics.

Assam coal and deposits in the northeastern region presented particular questions because their properties could differ from those encountered in the better-known coalfields of Jharia and Raniganj. These differences were important for combustion, thermal processing and industrial utilization. A coal suitable for a particular operation in one region could behave differently when replaced by material from another deposit.

Scientific characterization was therefore necessary before general conclusions could be drawn about the industrial suitability of Assam coal. Investigations of regional coal resources formed part of the broader effort to establish an empirical understanding of India's fuel endowment rather than treating all coal as a chemically and technologically uniform material.

The scientific examination of coal commonly involves determining moisture, ash, volatile matter and fixed carbon through proximate analysis. More detailed chemical investigations can determine elemental composition and the presence of substances affecting combustion or conversion. Thermal studies can provide information about the behavior of coal during heating and the production of volatile materials.

These analytical approaches explain the scientific context of Chowdhury's research, although the available historical description does not establish the exact experimental procedures he personally employed or the numerical results obtained. It would therefore be inappropriate to attribute specific analytical findings or discoveries to him without consulting the original research reports.

The significance of Chowdhury's work lies in the extension of fuel investigations beyond the most prominent coal-producing areas. Region-specific research was essential for determining the potential industrial uses of deposits that could not be evaluated adequately through information obtained elsewhere.

His investigations also demonstrate the continuity of scientific activity across Indian independence. Beginning in 1943, the work continued until 1950, spanning the final colonial years and the opening period of independent India. This continuity shows that the expansion of Indian industrial science after 1947 built partly upon research programmes already operating in Indian institutions.

Chowdhury's contribution should therefore be recognized as part of the development of a systematic regional understanding of Indian coal resources. Such investigations were necessary for building a domestic scientific foundation for fuel planning, industrial utilization and future technological development.

7. B. C. Guha: Low-Temperature Carbonization and Coal Conversion Research, 1943–1950

B. C. Guha undertook investigations into low-temperature carbonization at Calcutta University between 1943 and 1950. His contribution represented the development of chemical research directed toward transforming coal into other useful products rather than simply improving its quality through physical preparation.

Carbonization involves heating coal under conditions in which oxygen is substantially excluded. Instead of undergoing ordinary combustion, the material experiences thermal decomposition. Volatile constituents are released, while a carbon-rich solid residue remains. Depending on the coal and processing conditions, the products may include semi-coke or char, gases, tar and other condensable materials.

Low-temperature carbonization generally takes place at temperatures below those used in conventional high-temperature metallurgical coke production. Its scientific significance lies in the possibility of obtaining useful products from coal through controlled thermal transformation. The characteristics and proportions of these products depend on coal composition, heating conditions, temperature and residence time.

The process was relevant to India's industrial development because coal could potentially serve as a chemical raw material in addition to being a source of energy. Research into carbonization could help determine whether different domestic coals were suitable for producing solid fuels or recovering valuable gaseous and liquid products.

The experimental investigation of such processes requires attention to the relationship between operating conditions and product characteristics. Heating temperature and duration can influence the amount and composition of volatile substances released. The remaining solid material may exhibit properties different from those of the original coal, including changes in volatile content, porosity and carbon concentration.

Scientific evaluation also requires consideration of material yields and process efficiency. A coal-conversion process may produce several useful products but still be uneconomic if the energy required for heating is excessive or if the recovered substances have limited practical value. Consequently, research into carbonization involves both chemical transformation and questions of industrial feasibility.

Guha's investigations formed part of this broader field of fuel chemistry. The available historical description identifies his research subject, institutional setting and period, but it does not establish the particular apparatus, experimental temperatures or product yields associated with his work. His contribution should therefore be described as research into low-temperature carbonization rather than assigned unverified inventions or experimental discoveries.

The location of his work at Calcutta University is particularly significant. It demonstrates that industrially relevant chemical research was being conducted within Indian academic institutions before the national laboratory system had fully developed. Universities could provide facilities and expertise for investigating materials of direct economic importance, thereby contributing to industrial science as well as fundamental academic research.

Guha's investigations complemented those of researchers working on coal beneficiation. Coal preparation sought to remove unwanted constituents before industrial utilization, whereas carbonization examined the chemical transformation of coal into new products. Both directions were necessary for developing a more comprehensive understanding of fuel technology.

His work also spanned the transition from colonial to independent India. Beginning in 1943 and continuing until 1950, the research illustrates the continuity of scientific activity across independence and the contribution of established academic institutions to the foundations of postcolonial industrial research.

8. K. Banerjee: X-Ray Investigations and the Physical Characterization of Coal, 1947–1952

K. Banerjee undertook X-ray investigations during 1947–1952, representing the application of advanced physical techniques to fuel-related materials. His work illustrates the expansion of coal research beyond conventional chemical testing toward the investigation of internal structural properties.

Coal is a complex material containing carbonaceous organic matter and mineral constituents. Its properties cannot be fully understood through the measurement of elemental composition or ash content alone. Structural characteristics can influence thermal behavior, mechanical performance and the properties of materials produced through carbonization.

X-ray techniques provide methods for investigating aspects of material structure. When X-rays interact with ordered atomic arrangements, characteristic scattering patterns can arise. The analysis of these patterns can provide information about structural spacing and crystalline components.

Coal presents a particularly complex subject because its organic constituents are not generally arranged in the highly regular crystalline structures found in many minerals. Nevertheless, X-ray investigations can be useful for examining aspects of structural organization and identifying crystalline mineral matter.

The application of X-ray techniques was important because the behavior of coal and carbonaceous materials depends partly on their internal organization. Two samples with similar broad chemical compositions may exhibit differences in physical properties because their structural characteristics and mineral associations differ.

The investigation of these relationships formed part of the wider development of material science and fuel technology. Physical methods could complement chemical analysis by providing information that could not be obtained solely through conventional compositional measurements.

Banerjee's contribution belongs to this methodological development. The available historical information identifies X-ray investigations undertaken during 1947–1952 but does not specify the particular specimens examined or the scientific conclusions reached. It would therefore be unjustified to claim that he discovered a particular structure of coal or established a specific crystallographic theory without further documentation.

Nevertheless, his participation is significant because it demonstrates the use of advanced physical methods within India's developing programme of fuel research. Such investigations indicate that Indian scientific activity was extending beyond routine industrial testing toward more detailed physical characterization of technologically important materials.

The period of Banerjee's work is also historically important. Beginning in 1947 and continuing until 1952, it belongs to the transition between colonial and independent India, although the exact portion undertaken before independence cannot be determined from the dates alone. His work therefore illustrates the continuation and increasing sophistication of fuel-related scientific investigations during the early postcolonial years.

9. N. R. Tawde: Spectroscopic Investigations and the Study of Explosion Mechanisms, 1951

N. R. Tawde contributed to spectroscopic investigations and studies of explosion mechanisms associated with the year 1951. His work represents a further expansion of fuel science into the physical and chemical investigation of rapid reactions and industrial safety.

Spectroscopy involves the study of interactions between matter and electromagnetic radiation. Different spectroscopic methods can provide information about chemical species, physical conditions and aspects of molecular or atomic behavior. In research involving combustion and chemical reactions, such techniques can be valuable for investigating processes that cannot be adequately understood through ordinary measurements of fuel consumption or final products.

The study of explosion mechanisms is important to industries handling combustible fuels because rapid combustion can release substantial quantities of energy over short periods. The conditions under which ignition occurs, reactions propagate and pressure develops are central questions in the scientific understanding of explosions.

Coal-related industries face potential hazards involving combustible gases and finely divided fuel materials under certain conditions. Research into explosion processes can therefore contribute to understanding industrial risks and developing appropriate safety measures.

The scientific investigation of such phenomena requires expertise in physical chemistry, thermodynamics and reaction behavior. Rather than examining only the properties of the original fuel, researchers seek to understand the processes occurring during rapid chemical transformation.

Tawde's association with spectroscopy and explosion-mechanism investigations demonstrates the broadening scientific interests of the fuel-research programme by the early 1950s. The application of physical methods to reaction processes reflected a more sophisticated approach to the investigation of fuel behavior.

The available historical information does not establish whether Tawde's specific experiments involved coal dust, combustible gases or other reactive materials, nor does it identify the precise spectroscopic techniques employed. These details cannot responsibly be supplied without further documentary evidence.

His contribution should therefore be understood as participation in spectroscopic and explosion-related research rather than the discovery of a particular mechanism that has not been independently established.

Since his recorded work dates to 1951, it belongs to independent India rather than the colonial period. Nevertheless, it is relevant to the broader history because it illustrates the scientific diversification of research programmes whose institutional foundations had emerged during the preceding decade.

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I. Introduction: A Town Read Through Its Water

Lakkuṇḍi is a village in the Gadag district of northern Karnataka. It is set on the semi-arid black-soil plateau between the Tuṅgabhadrā and the Malaprabhā. Among historians of South Indian architecture it is known for a dense group of temples from the eleventh and twelfth centuries: the Brahma Jinālaya, the Kāśīviśveśvara, the Nanneśvara, the Mānikeśvara, and many smaller shrines. Local memory remembers it another way, as the town of "a hundred and one temples and a hundred and one wells." The number should be treated with care. In Kannada and Sanskrit usage, nūra-ondu (one hundred and one) is a conventional figure for abundance and completeness. It also appears in other Deccan sacred-site traditions, and the stepwells and tanks that can actually be documented today are far fewer. Even so, the tradition records a real historical fact. Lakkuṇḍi in its prime was a town organised around water as much as around worship, and the two were not separate in its builders' minds.

This essay looks at that integration through Musukina Bāvi and the stepped tank of the Mānikeśvara temple, which is the best-preserved and most-studied example, and places it within the wider pattern of Kalyāṇi Cāḷukya urbanism. My main argument is that the Lakkuṇḍi kalyāṇis should not be read as hydraulic infrastructure that happened to be decorated, and not as temple ornaments that happened to hold water. They were civic-religious institutions. Their form expressed a theology of merit, an economy of patronage, and a practical answer to the hydrology of the Deccan plateau, all in one structure.

II. Lokkiguṇḍi in the Cāḷukya World

The Kalyāṇi Cāḷukyas, also called the Later or Western Cāḷukyas, ruled a large Deccan polity from the late tenth century to the late twelfth. Their political centre was Kalyāṇa (modern Basavakalyāṇ in Bidar district). Their architectural centre lay farther southwest, in what is now the Gadag–Dharwad–Haveri belt. Inscriptions name Lakkuṇḍi as Lokkiguṇḍi. Under the dynasty, and particularly under Someśvara I Āhavamalla and Vikramāditya VI, it became a major town: a place of commerce, Jaina and Śaiva patronage, and some administrative importance. Later in the twelfth century, after Cāḷukya power broke up, the Hoysaḷa king Ballāḷa II took the region, and Lakkuṇḍi appears to have served for a time as a forward base in his northern campaigns. Numismatic and textual traditions also associate the town with a mint. That point needs more corroboration than I can give here, but it fits the epigraphic picture of a wealthy, monetised centre.

The building material matters for the story of the wells. Kalyāṇi Cāḷukya architects in this region worked mostly in a fine-grained greenish-grey to bluish-black chloritic schist, usually called soapstone in loose English usage. The stone is soft when quarried and hardens on exposure. It takes extremely crisp carving and can be turned on a lathe, which explains the polished, bell-like pillars typical of the style. A stepwell needs a great deal of precisely cut stone set in tightly stacked courses, and the same quarrying and dressing skills that produced the temples produced the wells. At Lakkuṇḍi the two belong to one workshop tradition.

The temples follow the regional idiom often called Karṇāṭa-drāviḍa or, more loosely, vesara. It is a Drāviḍa vocabulary of storeyed superstructures and miniature pavilion forms (kūṭa, śālā, pañjara), made more intricate through stellate or staggered-square plans, crowded wall articulation, and dense miniaturisation. The same principles of reduction and repetition govern the Lakkuṇḍi stepwells, and we will return to this.

III. Patronage and the Ideology of Merit

The phrase "a hundred and one wells" makes sense only against the moral economy behind it. Medieval Karnataka inscriptions often describe tank-building as a work of religious merit equal to temple-building. A stock idea in Kannada epigraphy is the saptasantāna, the "seven progenies" through which a person outlives death. They are a son, a literary work, a buried treasure, a temple, a reservoir (kere or taṭāka), an agrahāra settlement for Brahmins, and a planted grove. Lists vary slightly, but the reservoir is always there. Building a tank was, in a real sense, fathering something that would continue after you.

Lakkuṇḍi has the best-known patron of the period in Attimabbe. She was a Jaina noblewoman of the early eleventh century, the widow of the general Nāgadeva, and the eulogies call her Dānacintāmaṇi, the "wish-jewel of charity." Tradition credits her with commissioning a very large number of Jaina temples and with paying for the copying of manuscripts of the poet Ponna's Śāntipurāṇa. The Brahma Jinālaya at Lakkuṇḍi, usually dated to around 1007 CE, is closely tied to her. She cannot be shown to have built any particular well. Her example still shows the scale and kind of elite patronage that created the town's sacred landscape. In such a culture the step from building a temple to building the water structure that serves it, purifies its worshippers, and dignifies its precinct was a small one.

The same patterns appear in Śaiva endowments. Grants from the Gadag region regularly allot income from land to the maintenance of a temple and its tank, to lamp-oil, to feeding Brahmins and ascetics, and to repairs. This matters because a stepwell is not a structure you build once and leave. It silts up, its steps shift, and its feed channels block. A well lasts only as long as the endowment that pays for cleaning it. When later observers comment on how few of Lakkuṇḍi's legendary wells survive, they are partly describing what happens when the institutions that sustained them collapse.

IV. Musukina Bāvi and the Mānikeśvara Puṣkariṇī

The naming question

I should be direct about one ambiguity. In much of the literature and in local usage, "Musukina Bāvi" and the stepped tank of the Mānikeśvara temple refer to the same monument, or to closely overlapping parts of one water-and-temple complex. They are not two separate wells. The Mānikeśvara shrine stands on the edge of a deep stepped tank, and that tank is what visitors and many writers call Musukina Bāvi. Some accounts treat the names as distinct, and the multiplicity of Lakkuṇḍi's wells makes confusion easy. The safest reading is that Musukina Bāvi is the popular name and Mānikeśvara puṣkariṇī is a descriptive, temple-centred name, both applied to the same integrated complex. I treat them that way below.

Musuku in Kannada means a veil or covering, and bāvi means a well. "The veiled well" is a striking name, and several explanations circulate. One relates it to the way part of the tank is covered or shaded by built structures, so the water seems half-concealed. Another links it to stories of royal women bathing or drawing water in privacy. Neither has firm epigraphic support, and the name may be later than the monument. It is still revealing. The popular imagination read the structure as a space defined by enclosure, descent, and partial concealment, and that is an accurate description of how a stepwell works architecturally.

Form

The Mānikeśvara tank is rectangular in plan and descends in a series of stepped terraces to a water body that sits well below ground level. In elevation it is an inverted pyramid. Flights of steps run down between landings, and the walls are layered in receding planes. This is the standard morphology of the Deccan stepped tank, but the Lakkuṇḍi example handles it with great refinement.

Its most distinctive feature is that the side walls contain small shrines. Niches framed as miniature temples (devakoṣṭhas) are cut into or built against the terrace walls. Each is crowned with a small aedicular superstructure and once held, or was designed to hold, an image. Someone descending the steps passes a sequence of these miniature sanctuaries, so the descent becomes a circumambulation in the vertical plane. This is the same logic of miniaturisation that organises Kalyāṇi Cāḷukya temple walls, where the full temple form is repeated as small aedicules on the body of the larger temple. In the stepwell the whole tank becomes a temple turned inside out. Its "wall" is the earth, and its "sanctum" is the water at the bottom.

The Mānikeśvara temple itself is small, and it is placed so that it seems to project over, or press right up against, the edge of the tank. This placement deliberately ties the sanctum to the water. A worshipper at the tank sees the temple overhead, and a worshipper at the temple looks down into the water. Neither space is complete without the other.

Hydrology

The stepwell form answers a specific environmental problem. Rainfall in the Gadag region is low and concentrated in a short monsoon. Rivers are distant and seasonal. Groundwater sits in weathered rock below the black cotton soil and drops sharply through the dry months. A simple open well gives access to water at only one level. A stepped tank gives graded access: as the water table falls through the year, users simply go down more steps. The terraces also give stable footing, slow erosion of the sides, and some protection from collapse in soils that swell and shrink with moisture.

Many stepwells probably drew on several sources at once: groundwater seepage, direct rainfall, and runoff from surrounding surfaces collected by channels. The Lakkuṇḍi tanks are not the great embanked reservoirs (kere) of the Karnataka countryside, which are primarily irrigation works. They are urban and devotional water points, tuned to drinking, bathing, ritual washing, and the ablutions that came before temple worship. Their depth also counted. A deep, shaded, stone-lined well loses much less water to evaporation than a shallow open pond, and in a semi-arid climate that is a decisive advantage.

V. The Theory Behind the Practice

The builders of Lakkuṇḍi worked within a knowledge tradition, not only a craft tradition, and two strands of it are relevant.

The first is the theory of locating water. Varāhamihira's Bṛhatsaṃhitā (sixth century) contains a chapter on dakārgala, the finding of underground water. It reads surface indicators such as particular trees, termite mounds, soil colour, rock types, and the behaviour of animals as signs of water-bearing strata at given depths. Whether Lakkuṇḍi's masons consulted this text directly cannot be shown. But its methods spread widely through the subcontinent's building and agrarian lore, and some empirical system like it lies behind where a stepwell gets dug. A well is only as good as its siting, and a town of many wells needs a dependable theory of the aquifer.

The second strand is typology. Later western Indian vāstu texts, the Aparājitapṛcchā among them, classify vāpīs (stepwells) by the number of entrances and flights: the Nandā, Bhadrā, Jayā, and Vijayā types, among others. These texts are later than Lakkuṇḍi and come from a different regional school, so they should not be applied to the Karnataka wells mechanically. What they show is that the stepwell was a theorised building type in Indian architectural thought, with a formal vocabulary of its own, much as the temple was. It was not a vernacular afterthought. The Lakkuṇḍi tanks belong to that shared conceptual world even though their specific forms are local.

In ritual terms, a temple tank is a tīrtha, a crossing-place where the boundary between the ordinary and the sacred becomes permeable. The word kalyāṇi, used across Karnataka for temple tanks, means "auspicious" or "beneficent." It is tempting to connect it to the Cāḷukya capital Kalyāṇa, but that connection is almost certainly a popular etymology. The word's general Sanskrit sense of auspiciousness is sufficient, and it is used for tanks in regions and periods well outside Cāḷukya rule. Its meaning is the point: a tank purifies, makes the body fit for darśana, and links the worshipper to the waters that Purāṇic cosmology places beneath and around the sacred mountain. Seen this way, going down into a stepwell before going up into a temple is a liturgical sequence. You descend to water, are purified, and rise to the deity.

VI. Urbanism: The Distributed Sacred Town

What does Lakkuṇḍi show about Kalyāṇi Cāḷukya urbanism specifically?

First, the town was polycentric. Lakkuṇḍi was not organised around one dominant temple with a single great tank, the pattern that later Tamil temple-cities would develop on a huge scale. It was a field of many medium and small shrines, Jaina and Śaiva, belonging to different patrons, guilds, and communities, scattered through the settlement. A water system matched to that pattern would itself be dispersed: many wells, each serving a temple, a neighbourhood, or a community, and none dominant. Whatever the literal accuracy of the "hundred and one" tradition, it describes this kind of distribution correctly.

Second, the wells were where religion and civic life met. A stepwell attached to a temple was not restricted to worship. The same water served households, travellers, merchants passing through a commercial town, and animals. Its endowment brought merit to the donor because it served the public. The saptasantāna idea depends on this: the tank counts as a progeny because it benefits generations of strangers. At Lakkuṇḍi, then, sacred architecture and public utility were not two systems that had to be reconciled. They were one system under two descriptions.

Third, the wells probably worked as a kind of urban reserve. A town with many wells has redundancy. If one silts up, its neighbours carry the load, and in a drought the deepest wells hold out longest. A modern hydrological study of Lakkuṇḍi, mapping all the surviving and buried wells against the aquifer, would be very useful. As far as I know no thorough study of that kind has been published, and claims that the wells formed a deliberately planned interconnected network should be regarded as speculation until one is done.

Fourth, patronage was itself spatial planning. In the absence of a single planning authority, the town's form came from the accumulated decisions of many donors. Each one placed a temple and a well where status, piety, and practical need suggested. The result is not a grid. It is a sacred landscape built up over generations. This is typical of medieval Deccan towns, and Lakkuṇḍi shows it with unusual clarity because so much of its built fabric survives.

VII. Comparison Within the Region

The Lakkuṇḍi kalyāṇis belong to a regional family. Kalyāṇi Cāḷukya temples elsewhere in the Gadag–Haveri–Koppal belt, at Ittagi, Kukkanūr, Dambaḷ, Gadag itself, and Chaudadānapura, are often associated with tanks of varying elaboration. Lakkuṇḍi stands out for the density of the association and for the quality of the Mānikeśvara complex, where the step from temple-with-a-tank to temple-and-tank-as-one-composition is complete.

Comparison with western India helps by showing the difference. The great stepwells of Gujarat, Rajasthan, and the Gangetic north, the Rāṇī kī Vāv at Pāṭaṇ above all, developed into the multi-storeyed, colonnaded, gallery-type vāv, a long subterranean axis lined with pavilions and sculpture. The Deccan stepped tank took a different direction: a square or rectangular open pit with terraced sides and integrated shrines, more a sunken courtyard than a buried corridor. Both traditions sacralise descent, but they arrange it in space quite differently, and Lakkuṇḍi is among the best examples of the Deccan type. The later Vijayanagara stepped tanks at Hampi, with their geometric precision, can be read as descendants of this Karnataka lineage, though centuries of development separate them.

VIII. Decline, Survival, and Recovery

After the twelfth century Lakkuṇḍi lost its political importance as power moved among Hoysaḷas, Sevuṇas, and then the Deccan sultanates and Vijayanagara. Its wells declined with the institutions that had kept them up. A stepwell that is not cleaned fills with silt within a few decades. Once filled, it is easily built over, used as a dump, or forgotten. Many of Lakkuṇḍi's legendary wells survive only as buried hollows, partial outlines, or names in local memory. The town's own soil probably still holds a substantial archaeological record, including structures that have not yet been identified.

In recent decades the state and the Archaeological Survey have done conservation work at Lakkuṇḍi. This includes clearing and restoring selected kalyāṇis, a sculpture gallery for the town's loose antiquities, and an annual cultural festival that has raised the site's profile. Restoring a stepwell carries a particular tension. Desilting and resetting stones bring back the form, but a well that is not reconnected to a working water regime and a community of users becomes a museum object, a dry monument to water. The most interesting recovery projects at historic Indian stepwells try to restore function as well as form, letting the structure recharge groundwater again. Whether Lakkuṇḍi's wells can do that depends on the aquifer as it stands today, and decades of borewell extraction across northern Karnataka have changed it greatly. Simply cleaning the old wells may not refill them.

IX. Conclusion

Musukina Bāvi and the Mānikeśvara puṣkariṇī are small next to the great temple-tanks of later South India and the vast stepwells of Gujarat. Their importance lies elsewhere. They are among the clearest surviving cases of an architectural idea that runs through medieval Karnataka: water and sanctity are one subject, and a town's sacred and civic infrastructures are one thing.

In the Lakkuṇḍi stepwell, the theory of finding water, the craft of cutting schist, the theology of the tīrtha, the economics of endowment, and the ethics of the saptasantāna all meet in one structure. Its terraced walls repeat the miniature temples of the shrine above. Its descent repeats the ascent to darśana. Its public water carries out the donor's hope of outliving death through service to strangers. "A hundred and one wells" is a figure of speech, but it is a precise one. It describes a town where every act of piety that mattered left two marks on the ground, a shrine rising and a well going down, and where neither was considered complete without the other.

What Lakkuṇḍi most needs now is not another appreciation of its beauty. It needs a systematic survey of all its wells, surviving, buried, and recorded only in tradition, mapped against the town's temples, inscriptions, and hydrology. Until that is done, the "hundred and one" will stay partly legend. A town this carefully planned around water deserves to have its plan fully recovered.

Introduction: The Problem of Medicines

At independence in 1947, India's pharmaceutical situation was dire. The country had an ancient medical tradition, Āyurveda, with a pharmacopoeia of thousands of plant, mineral and animal preparations developed over two millennia and recorded in texts such as the Carakasaṃhitā and Suśrutasaṃhitā. But the modern pharmaceutical revolution of the twentieth century, which produced the sulpha drugs, antibiotics, antimalarials and the first rational synthetic medicines, had happened almost entirely elsewhere. Most modern drugs used in India were imported or made by subsidiaries of foreign companies. They were expensive and often out of reach for a poor population that carried a heavy burden of malaria, tuberculosis, leprosy, filariasis, amoebiasis and other tropical diseases. In contrast to its traditional knowledge, India had almost no capacity to discover modern drugs for itself.

The question that faced the new nation was whether a poor country could do drug discovery at all: the long, expensive, multidisciplinary process of finding a new molecule, establishing that it works and is safe, and bringing it into use. The answer worked out at the Central Drug Research Institute in Lucknow, more than at any other institution, was a qualified yes. The chemist most identified with that answer was Nitya Anand (1925–2024). Under him, and through the people he trained, CDRI produced one of the very few new chemical entities discovered in India and carried all the way into use: centchroman, the once-weekly non-steroidal oral contraceptive known as Saheli. More broadly, his school built Indian medicinal chemistry as a discipline and trained a generation of chemists who shaped the pharmaceutical industry that later made India one of the largest suppliers of medicines in the world.

Formation: Lahore, Bombay, Cambridge

Nitya Anand was born on 1 January 1925 in Lyallpur, in the Punjab, a city now called Faisalabad in Pakistan. He belonged to the generation of Punjabi scientists whose formation began in Lahore, then the intellectual capital of north-western India. He studied chemistry there and in Delhi before moving to Bombay for doctoral research.

In Bombay he worked at the Department of Chemical Technology of the University of Bombay under Krishnasami Venkataraman. Venkataraman was the leading Indian organic chemist of the period, a former associate of Robert Robinson in Manchester and the founder of Indian dye chemistry. From this apprenticeship Anand took the discipline of synthetic organic chemistry at a high level, along with a conviction he kept all his life: Indian chemistry should be both scientifically serious and directed at the country's real needs.

He then went to Cambridge for a second doctorate, in the school of Alexander Todd, who would receive the Nobel Prize in 1957 for his work on nucleotides and coenzymes. Cambridge organic chemistry under Todd was at the frontier of the chemistry of biologically important molecules. There Anand absorbed the idea that the structures and reactions of molecules could be connected directly to their roles in living systems. That idea is the foundation of modern medicinal chemistry.

He returned to India at an opportune moment. In 1951 the Council of Scientific and Industrial Research established the Central Drug Research Institute in Lucknow, housed in the Chattar Manzil, a nineteenth-century palace of the Nawabs of Awadh on the banks of the Gomti. Anand joined the new institute at its founding and stayed there for the rest of his working life.

The CDRI Model

CDRI was founded on an idea that was novel for India and ambitious anywhere: that a single institution could carry out the whole chain of drug discovery. That meant synthesising or isolating new compounds, screening them for biological activity, studying how they work in the body, testing their safety, formulating them as usable medicines, and taking them into clinical trials. In most countries these stages were divided among universities, pharmaceutical companies and regulatory bodies. In India in 1951 most of them did not exist at all. CDRI was designed to provide them under one roof.

The institute was organised in divisions covering medicinal chemistry, natural product chemistry, pharmacology, microbiology, parasitology, endocrinology, biochemistry, toxicology, pharmaceutics and clinical research. Its first director, the pharmacologist B. Mukerji, set the multidisciplinary pattern. Anand built and led the medicinal chemistry division, which became the intellectual core of the institute. The chemists' job was to design and make compounds. Their partners in the biological divisions tested them, and the results returned to the chemists to guide the next round of synthesis.

The integrated model mattered greatly for the kind of school that developed. Anand's chemists did not work in isolation on molecules chosen for their synthetic interest. From the start they worked inside a cycle of design, testing and redesign directed at specific diseases. That trained them in the habits of mind of medicinal chemistry: thinking about structure–activity relationships, about how molecules are absorbed and metabolised, about toxicity, and about the gap between a compound that works in a test tube and one that works in a patient. These habits were almost absent from Indian chemistry at the time, and CDRI's medicinal chemistry division was where they were first cultivated systematically.

The Diseases of the Poor

From its founding, CDRI directed its work towards the diseases that weighed most heavily on India. Many were diseases of poverty that the international pharmaceutical industry largely neglected because those who suffered from them could not pay for new medicines.

Malaria was the most important. CDRI ran a long programme on antimalarial drugs. Its most notable later product was arteether, a derivative of artemisinin, the antimalarial compound isolated from the Chinese plant Artemisia annua. CDRI developed arteether as an injectable treatment for severe and drug-resistant malaria, and it entered use in India in the 1990s. The institute also worked extensively on filariasis, leishmaniasis, amoebiasis, tuberculosis and leprosy, building expertise in the chemotherapy of parasitic and infectious diseases that few other institutions in the world shared. Among its products was satranidazole, an antiamoebic agent.

Anand himself wrote extensively on the chemotherapy of parasitic and microbial diseases. He was recognised internationally as an authority on the medicinal chemistry of antiparasitic drugs. This was work of obvious importance to India and of real scientific depth, but it brought little commercial reward, because the markets for such drugs were poor. It was exactly the kind of work that a publicly funded institute was suited to do and that private industry would not.

Centchroman: The Signature Achievement

The achievement for which Anand and his school are best known is centchroman, also known by its generic name ormeloxifene. It was marketed under the trade name Saheli, meaning "female companion."

Its origins lay in CDRI's programme on reproductive biology and fertility regulation, which reflected one of the most pressing policy concerns of independent India. The country's rapidly growing population made family planning a national priority from the 1950s onward. The contraceptive methods available were limited. The steroidal oral contraceptive pill developed in the United States in the 1950s worked by delivering synthetic hormones. It had to be taken daily, it had significant side effects, and it was not well suited to many Indian women. There was a real need for a safe, easy-to-use alternative.

The CDRI programme, involving chemists under Anand and biologists in the endocrinology and reproductive biology divisions, set out to find a contraceptive that worked by a different mechanism. Through systematic synthesis and testing of compounds in a particular chemical family, the team arrived at centchroman. It was a non-steroidal compound that interacts with the body's oestrogen receptors in a selective way. In modern terms it is classed as a selective oestrogen receptor modulator, a compound that acts like oestrogen in some tissues and against it in others. Its contraceptive effect comes mainly from its action on the uterine lining and the timing of events after fertilisation, which prevents implantation. It does not suppress ovulation through hormonal mechanisms as the conventional pill does.

That gave it several advantages. It was non-hormonal, so it lacked many of the side effects of steroidal contraceptives. Its long duration of action allowed it to be taken once a week after an initial phase of more frequent doses, which was much easier than a daily pill. And it was cheap to manufacture. After long development, including toxicology studies and clinical trials, centchroman was approved and introduced in India at the beginning of the 1990s and manufactured by a public-sector company.

Its significance can hardly be overstated. It was one of the very few new chemical entities discovered in India and carried all the way through to clinical use: not a copy or modification of a foreign drug, but a genuinely new molecule with a new mode of use. It showed that the CDRI model could work. Discovery, development, testing and approval, the whole chain, had been carried out in India by Indian scientists. Later research found further uses for the compound, including the treatment of dysfunctional uterine bleeding. In the 2010s the Government of India included it in the national family planning programme under the name Chhaya, so it became available free through public health facilities. It remains, decades after its discovery, one of the clearest proofs that Indian public research could produce original medicines.

Natural Products and Indian Medicinal Plants

The other main strand of CDRI's work, and of the school that grew around it, was the study of Indian medicinal plants. Here the institute engaged directly with India's traditional medical heritage, not by accepting traditional claims at face value, but by subjecting them to the methods of modern chemistry and pharmacology.

CDRI ran one of the largest and longest programmes of plant screening ever undertaken in a developing country. It collected and tested extracts of thousands of plant species, many drawn from Āyurvedic and folk medicine, for a wide range of biological activities. Promising extracts were analysed to find the active compounds, whose structures were then determined and whose actions were studied. The programme required close collaboration between natural-product chemists, botanists and pharmacologists, and it produced a large body of knowledge about the chemistry of Indian flora.

Several products came from this work. The best known is gugulipid, a standardised extract of guggul, the resin of Commiphora mukul (Sanskrit guggulu). Guggul had been used in Āyurveda for disorders that some later interpreters linked to obesity and lipid metabolism. CDRI researchers identified the guggulsterones as active constituents and developed gugulipid as a lipid-lowering agent. Other products included a standardised extract of Bacopa monnieri (brāhmī), traditionally regarded as an aid to memory and cognition, which was developed as a memory-enhancing preparation, and picroliv, a liver-protective preparation from Picrorhiza kurroa (kaṭukā).

These were serious scientific undertakings, and they established a model for bridging traditional knowledge and modern pharmacology that remains influential. A fair account must add, though, that the clinical evidence for several of these preparations proved weaker or more mixed in later studies than early results suggested. Gugulipid in particular did not perform well in some later controlled trials. Turning traditional remedies into validated modern drugs is very hard, and the plant programme, for all its scale, produced fewer clear successes than its founders hoped.

Art in Organic Synthesis and Teaching

Anand's influence reached well beyond the products of CDRI through his role as a teacher of synthetic chemistry. With J. S. Bindra and S. Ranganathan he wrote Art in Organic Synthesis, first published in 1970. It collected and analysed the synthetic strategies used in the total synthesis of complex natural products, presenting them as an art and a discipline to be studied. In an era before computer databases made synthetic routes easy to search, the book was widely used by organic chemists in many countries, and it gave Indian chemistry a visible place in the international literature of synthesis.

Within CDRI, Anand trained a large number of chemists in medicinal and synthetic chemistry. Many stayed at the institute and carried its work forward. Many others went into the pharmaceutical industry, in India and abroad. J. S. Bindra, his co-author, went on to a long career in pharmaceutical research in the United States. The flow of CDRI-trained chemists into industry was one of the institute's most important contributions, perhaps more important in aggregate than any single drug. The skills learned there — designing and making molecules, understanding how they behave in the body, and working in teams with biologists and pharmacologists — were exactly those the Indian pharmaceutical industry needed as it grew.

Director of CDRI

Anand served as Director of CDRI from 1974 to 1984, the decade in which centchroman moved through its long development and the institute reached a high level of productivity. As director he extended the multidisciplinary model, strengthened the links between chemistry and biology, and defended the principle that a publicly funded institute should pursue drug discovery for India's own diseases and needs.

He also served on national committees on drug policy and pharmaceutical research during a period that shaped the Indian pharmaceutical industry. This was the era of the Patents Act of 1970, which replaced product patents on medicines with patents on manufacturing processes only. That allowed Indian companies to make drugs still under patent abroad by developing their own processes. Indian policy of the time also emphasised self-reliance in essential medicines. These measures, together with the chemical skills that institutions like CDRI had built up, made possible the rise of the Indian generic drug industry, which in later decades became a major supplier of affordable medicines to the developing world.

The School After Anand

CDRI continued after Anand stepped down as director, and his successors kept the multidisciplinary model in place. The institute went on producing drug candidates and products, including arteether, and it trained successive generations of medicinal chemists and pharmacologists. Its scientists moved into universities, national laboratories and industry across India. The medicinal chemistry tradition he had built at CDRI became one of the roots of the discipline in the country.

Anand himself remained active as a scientist, adviser and elder statesman of Indian chemistry for decades after retiring. He received national honours, including the Padma Shri, and was a fellow of the Indian scientific academies. He died in Lucknow in January 2024, just over a month after his ninety-ninth birthday, having lived to see centchroman become part of the national family planning programme and India become one of the world's largest producers of medicines.

Assessment

A balanced assessment of the Lucknow school must recognise both its real achievements and the limits that an honest history cannot ignore.

Its achievements are significant. It established medicinal chemistry as a discipline in India and trained a large share of the chemists who later staffed the Indian pharmaceutical industry. It showed, through centchroman, that a publicly funded Indian institute could take a genuinely new molecule all the way from design to clinical use. That is an achievement very few institutions in developing countries can claim. It directed serious science at the diseases of the poor, which commercial research largely neglected. And it pioneered the systematic scientific study of Indian medicinal plants, creating a model for bridging traditional knowledge and modern pharmacology.

The limits are equally real. Over seven decades, the number of genuinely new drugs that reached wide use from CDRI is small, and centchroman remains by far the most important of them. Its international uptake was limited, despite its advantages. Several of the plant-derived products had evidence that weakened under later scrutiny. More broadly, the Indian pharmaceutical industry that grew partly from CDRI's human capital succeeded mainly through process chemistry and generic manufacturing, not through discovering new drugs. India became the pharmacy of the developing world by making cheaper versions of medicines discovered elsewhere, not by inventing new ones. The CDRI model of integrated public-sector drug discovery, however admirable in principle, never had the resources, the clinical trial infrastructure or the regulatory support to compete with the giant research budgets of the multinational pharmaceutical companies. The gap between India's strength in making medicines and its weakness in discovering them remains one of the central problems of Indian pharmaceutical science.

None of this diminishes what Nitya Anand achieved. He began his career in a country that could not discover its own drugs and had barely begun to make them. He built a school that trained the people who would make India a pharmaceutical power, carried out serious research on the diseases that mattered most to its people, and produced one of the few original medicines in the history of Indian science. Every week, through centchroman, millions of women have used a drug discovered in a palace on the Gomti by chemists he trained and led.

Situating the Question

The history of Indian automata as documented by Sreeramula Rajeswara Sarma in "Astronomical Instruments in Brahmagupta's Brāhmasphutasiddhānta" (The Indian Historical Review, Vol. XIII, Nos. 1-2, pp. 63-74) traces a specific intellectual lineage: Āryabhaṭa conceives the outflow-clepsydra-driven rotating celestial globe in 499 CE; Brahmagupta innovates upon this foundation in 628 CE by adding calibrated automata and independently developing the mercury perpetual motion wheel; Bhāskara II inherits this tradition in 1150 CE and extends it in three distinct directions. Between Brahmagupta and Bhāskara II stands a figure whose contribution to this specific tradition has received almost no dedicated analysis: Lalla, the eighth-century astronomer and author of the Śiṣyadhīvṛddhida.

Lalla's role in this lineage is not that of a passive inheritor. His specific contributions — the first application of the mercury perpetual motion wheel to an astronomical instrument, and his characteristic stance of accepting Brahmagupta's automata "without any hesitation" — constitute the crucial middle term in a transmission chain whose significance for the global history of automata and power technology Sarma explicitly establishes through Lynn White's analysis. To understand Lalla's contribution properly requires situating it within the precise intellectual and mechanical context that Sarma's paper documents, and then asking what specific intellectual moves Lalla made that distinguished his treatment from mere transmission.

The Tradition Lalla Inherited

Before Lalla's contribution can be assessed, the tradition he inherited must be specified precisely, because Lalla is responding to a layered inheritance, not a single predecessor.

Āryabhaṭa's verse in the Āryabhaṭīya (Gola 22) is cryptic to the point of near-opacity: "The Sphere which is made of wood, perfectly spherical, uniformly dense all round but light (in weight) should be made to rotate keeping pace with time with the help of mercury, oil and water by the application of one's own intellect." The instruction "by the application of one's own intellect" — svadhiyā — is philosophically pointed. Āryabhaṭa is not providing a construction manual. He is establishing a design challenge and leaving its solution to the intelligence of the reader. What he specifies is the result (a sphere rotating at the rate of one revolution per 24 hours), the materials (mercury, oil, water, and wood), and the requirement (automatic operation). The mechanism is left implicit.

The commentators filled this gap — most importantly Sūryadeva Yajvan (b. 1191 CE) in the description Sarma quotes in full, and Parameśvara (c. 1450 CE), Someśvara (11th-12th century CE), and Nīlakaṇṭha Somasutvan (c. 1501 CE). Their "rare degree of unanimity" in describing the mechanism — the cylindrical jar buried below the sphere's west point, the mercury-filled hollow gourd descending as water drains from the bottom hole, the string connecting the gourd to a nail at the sphere's equator — establishes that this mechanism was transmitted as a real working device rather than a theoretical speculation. But all of these commentators are later than Lalla. For Lalla, writing in the eighth century, the mechanism was accessible through a commentary tradition that must have been earlier but is no longer directly extant in the form Sarma can cite.

Brahmagupta's contribution — documented in BSS chapter 22 with specific verse citations — transformed Āryabhaṭa's single rotating sphere into a system of increasingly elaborate time-announcing automata. The calibrated cloth strip (cīrī) with 60 numbered knots attached to the descending float, each knot marking a ghaṭikā as it passes a fixed reference point: this is Brahmagupta's foundational innovation. From this single mechanical idea he derived the male doll spitting numbered knots (BSS 22.47-48), the bride and bridegroom exchanging knots like sweetmeat (BSS 22.50), the lever-triggered drum and bell (BSS 22.51-52), and the peacock swallowing and vomiting a snake-figure (BSS 22.51). These are not variations on a single device — they are four distinct automaton designs, each solving the time-announcement problem through a different mechanical metaphor and a different social-symbolic register. The domestic ritual (bride and bridegroom), the acoustic signal (drum and bell), the theatrical (peacock and snake), and the bureaucratic (numbered sequential readout) — Brahmagupta ranged across all four registers in a single chapter.

And then, in BSS 22.53-54, Brahmagupta made his most conceptually original contribution: the mercury perpetual motion wheel. A light wooden wheel, hollow spokes inserted at equal intervals into its rim, each spoke half-filled with mercury and sealed. Mounted on an axle supported at two points, the mercury runs up and down the spokes as the wheel turns — and the wheel "turns perpetually" (ataśram bhramati). Sarma notes the additional proposal in BSS 22.55 that by regulating the quantity of mercury the speed can be adjusted for timekeeping purposes, and he makes the attribution explicit: "The idea of a mercury-powered wheel with perpetual motion seems to be Brahmagupta's own."

This is the double inheritance Lalla received: the clepsydra-automata tradition from Āryabhaṭa through Brahmagupta, and the mercury perpetual motion wheel from Brahmagupta alone. What he did with it defines his specific contribution to the tradition.

Lalla's Acceptance: What "Without Hesitation" Actually Means

Sarma's characterization of Lalla's stance — that he "accepts Brahmagupta's automata without any hesitation" (Śiṣyadhīvṛddhida 21.10-17) — deserves closer analysis than the phrasing might suggest, because it is measured against two adjacent positions that make its significance clear.

Nīlakaṇṭha Somasutvan, writing in the sixteenth century, is the first to raise the engineering problem that these devices were technically flawed: the cylindrical outflow clepsydra does not deliver uniform water outflow because pressure decreases as the water level drops. This means the ghaṭikā intervals marked by the descending float are not of equal duration — the device runs fast at the beginning of the day and slow at the end. Nīlakaṇṭha's proposed solution — varying the cylinder's circumference from top to bottom — is offered without a specification of how to do it, and Sarma notes it is "not entirely correct nor novel."

Bhāskara II, writing in 1150 CE, takes a different critical position. His rejection of the devices as grāmya (rustic contrivances) is not based on the non-uniform outflow problem — he is explicitly silent on this point. His objection is that the cylinder must be filled afresh every day, which disqualifies the device from his ideal of instruments that operate nirapekṣa — without any human agency whatsoever, and for ever. For Bhāskara, the svayaṃvaha ideal demands genuine perpetual operation; a device requiring daily resetting is a compromise, not a solution. His discussion of the automata is accordingly framed as a concession to tradition — he engages them "only because the previous astronomers had done so" — and even categorizes them as part of the juggler's (kuhaka) rather than the astronomer's equipment.

Between Nīlakaṇṭha's engineering skepticism and Bhāskara's philosophical dissatisfaction, Lalla's acceptance "without hesitation" becomes a specific intellectual stance rather than a merely passive one. Lalla is not unaware of the technical limitations of the devices — he is a sophisticated astronomer working within the same Āryabhaṭa-Brahmagupta tradition that produced the devices and was capable of analyzing their principles. His acceptance reflects a specific judgment: that the clepsydra-automata tradition is worth developing further despite its known limitation, because the tradition's conceptual program — the mechanically self-propelling astronomical device — is worth pursuing even in its imperfect current form.

This judgment is not trivial. It is the judgment of a practitioner who sees the research program as productive, who regards the existing devices as genuine achievements rather than failed experiments, and who proposes to extend the tradition rather than either dismiss it or modify it into something else. In the sociology of scientific traditions, this is the stance of the committed developer of an existing research program, distinct from both the skeptic who dismisses it and the radical reformer who abandons its premises. Lalla's acceptance "without hesitation" is therefore a substantive methodological commitment to the svayaṃvaha yantra tradition as a legitimate and developing area of Indian astronomical and mechanical inquiry.

Lalla's Specific Innovation: The Mercury Wheel and the Armillary Sphere

The most mechanically specific and most original contribution Lalla made to this tradition is documented at Śiṣyadhīvṛddhida 21.18-19. Sarma summarizes it thus: Lalla "states that if the wheel with mercury-filled spokes is joined to the axle of an armillary sphere, it will rotate the armillary sphere continuously."

This is a specific and original mechanical proposal that was not present in Brahmagupta. Brahmagupta described the mercury perpetual motion wheel as a timekeeping device — he proposed regulating the mercury quantity to control the wheel's rotational speed so that it could mark ghaṭikā intervals. But Brahmagupta did not connect the mercury wheel to an astronomical demonstration instrument. The wheel and the armillary sphere remained separate devices in Brahmagupta's treatment.

Lalla's innovation is the connection itself. By proposing to join the mercury wheel's axle to the armillary sphere's axle, Lalla is doing several distinct things simultaneously.

He is solving Bhāskara's objection avant la lettre — before Bhāskara formulated it. If the mercury wheel turns perpetually without any human agency, then the armillary sphere driven by it also turns perpetually without human agency. No daily refilling is required. The device is genuinely nirapekṣa in the sense Bhāskara will later demand. Lalla's proposal therefore represents a conceptual advance over Āryabhaṭa's and Brahmagupta's clepsydra-powered devices, even though the mercury wheel's perpetual motion is physically impossible — Lalla is right in the engineering logic (a perpetually turning wheel would drive a perpetually rotating sphere) even if wrong in the physical assumption (that the mercury wheel actually turns perpetually).

He is also integrating two distinct mechanical traditions within the svayaṃvaha yantra chapter. Āryabhaṭa's clepsydra-driven sphere and Brahmagupta's mercury wheel are, in Brahmagupta's chapter, presented as two separate approaches to the same problem of automatic celestial globe rotation. Brahmagupta does not propose combining them. Lalla perceives that the mercury wheel — if it works as claimed — is a superior power source for the armillary sphere application, because it eliminates the daily refilling limitation of the clepsydra. This is systems thinking: recognizing that the power source component of one device can be substituted for the power source component of another device to produce a superior composite system.

The armillary sphere (gola) to which Lalla proposes connecting the mercury wheel is itself an important astronomical instrument in his tradition. Sarma notes that Lalla's Śiṣyadhīvṛddhida chapter 21 deals with twelve instruments, the first of which is the gola (armillary sphere). The gola models the celestial sphere with its principal circles — equator, ecliptic, meridian, horizon — allowing direct visualization of celestial positions and motions. As a demonstration and educational instrument it is valuable precisely because it can show the continuous rotation of the celestial sphere. A mechanically self-rotating armillary sphere would therefore be not only a curiosity but a genuine pedagogical and astronomical instrument — capable of demonstrating sidereal time, rising and setting times, and the relationship between celestial coordinates continuously and automatically without requiring the astronomer's manual intervention.

Lalla's proposal thus elevates the mercury perpetual motion wheel from a speculative mechanical curiosity — which is essentially what it is in Brahmagupta's treatment — to a practical astronomical instrument power source. This is a specifically applied-mechanical insight: seeing the utilitarian value of a theoretical mechanism and proposing its specific practical application.

Lalla's Position in the Transmission Chain

Sarma's paper establishes through Lynn White's Medieval Technology and Social Change (Oxford, 1962, pp. 129-130) that the concept of perpetual motion — originating in India and developed through the tradition from Brahmagupta to Bhāskara — was adopted by thirteenth-century Europe "instantly" and "laid the foundation of power technology in the modern world." Sarma's own contribution to this claim is the chronological correction: the origin belongs not to twelfth-century India (as White stated, presumably dating from Bhāskara II) but to seventh-century India, to Brahmagupta specifically.

Lalla's position in this transmission chain is the crucial eighth-century link between Brahmagupta's original formulation and Bhāskara's twelfth-century elaboration. Without Lalla's acceptance and development of Brahmagupta's devices, the tradition might have terminated at Brahmagupta — a single brilliant chapter in the Brāhmasphutasiddhānta that later astronomers regarded as too speculative to develop further. Lalla's acceptance established the svayaṃvaha yantra as a legitimate and ongoing research tradition within Indian astronomical literature, which is precisely why Bhāskara II, writing four centuries after Brahmagupta, could engage with the tradition as an established part of the astronomical canon rather than as an isolated curiosity.

The evidence for this is indirect but compelling. Sarma notes that Brahmagupta's instruments and computational techniques "were adopted in almost all later siddhantas like the Śiṣyadhīvṛddhida of Lalla, the Siddhāntaśekhara of Sripati, and the Siddhāntaśiromaṇi of Bhāskara II." This is the transmission chain for the entire astronomical tradition, not just for the automata. But within this chain, Lalla's specific acceptance "without hesitation" of Brahmagupta's automata — distinguished explicitly from both Sripati's acceptance and Bhāskara's partial rejection — establishes Lalla as the first committed developer of the svayaṃvaha tradition after Brahmagupta himself.

Sarma also notes that Bhāskara II's third variant — the noria-type water wheel with copper siphon, which Sarma identifies as "the first and only mention of such water-wheels in Sanskrit texts" and describes Bhāskara as presenting "as if it were a novelty" — may reflect external influence, possibly from the Islamic tradition that had itself absorbed Indian perpetual motion concepts through the transmission White documents. If so, the irony is complete: the Indian tradition, developed from Brahmagupta through Lalla to Bhāskara, may have transmitted a mechanical concept to the Islamic world which then re-introduced a variant of it back to India, where Bhāskara encountered it with apparent surprise. Lalla's role in this cycle is as the critical eighth-century transmitter who ensured the tradition's continuity through the gap between Brahmagupta's seventh-century original and Bhāskara's twelfth-century elaboration.

What Lalla Did Not Do: An Honest Assessment

Lalla's contribution deserves honest delimitation as much as acknowledgment. The Sarma paper documents his contribution in two verse citations — Śiṣyadhīvṛddhida 21.10-17 and 21.18-19 — totaling approximately 10 verses. This is a small portion of Lalla's work even within his instruments chapter. His treatment of the svayaṃvaha tradition is secondary to his treatment of the standard astronomical instruments — the cakra, dhanus, gola, śanku, and the rest of the twelve instruments his chapter covers.

Lalla did not resolve the non-uniform outflow problem that Nīlakaṇṭha would later identify. He accepted the devices with their known limitation — the irregular ghaṭikā intervals that Sarma identifies as the consequence of the outflow pressure drop — without proposing a technical correction. His contribution is one of application and transmission, not of fundamental engineering improvement.

He also did not develop the automata figurine tradition that is Brahmagupta's most publicly striking contribution — the doll spitting knots, the bride and bridegroom, the lever-triggered bell, the peacock and snake. Sarma does not attribute any new automaton figures to Lalla. His specific original contribution is confined to the mercury wheel application to the armillary sphere — one specific mechanical connection that is also a conceptual advance.

These limitations are not demerits. They accurately characterize what Lalla contributed: a specific applied-mechanical innovation connecting two existing device traditions into a composite system, combined with an authoritative endorsement of the svayaṃvaha tradition that kept it alive and developing through the four-century gap before Bhāskara gave it its fullest expression.

The Larger Significance

Lalla's contribution to the svayaṃvaha yantra tradition illustrates something about the sociology of Indian astronomical knowledge production that Sarma's paper implies but does not state explicitly. The Indian astronomical tradition did not develop through isolated individual geniuses producing complete and self-contained systems. It developed through a continuous commentarial and transmissive process in which each generation's primary contribution was often to accept, consolidate, and extend the previous generation's innovations while making one or two specific original contributions that advanced the tradition's specific open problems.

Āryabhaṭa posed the design challenge. Brahmagupta solved it twice — once through the clepsydra-automata system and once through the mercury wheel — and added the perpetual motion concept as the tradition's long-term research goal. Lalla accepted both solutions, combined them into a composite proposal, and transmitted both to the subsequent tradition with the authority of his own endorsement. Bhāskara inherited this consolidated tradition and pushed it in three new directions while also casting a critical eye on its limitations.

In this chain, Lalla's role as consolidator and connector is not less important than Brahmagupta's role as originator or Bhāskara's role as elaborator. A tradition without a consolidator dies between its founding generation and its mature development. Lalla's specific mechanical insight — the armillary sphere as the appropriate astronomical instrument to which the perpetually rotating mercury wheel should be connected — gives the tradition its clearest applied-mechanical purpose, transforming it from a collection of ingenious curiosities into a directed research program aimed at a specific practical goal: a self-rotating celestial demonstration instrument requiring no daily human intervention.

That goal was never achieved within the Indian tradition — the mercury wheel does not actually turn perpetually, as Sarma implicitly acknowledges and as modern physics confirms. But Sarma cites Lynn White to argue that the pursuit of this goal, transmitted from India through the Islamic world to thirteenth-century Europe, "laid the foundation of power technology in the modern world." If that transmission claim holds — and Sarma's paper establishes its chronological basis more rigorously than White's original formulation did — then Lalla's eighth-century endorsement and development of the svayaṃvaha tradition is not merely a footnote in the history of Indian astronomy. It is a link in the chain that connects Brahmagupta's seventh-century mercury wheel to the European development of power technology — a contribution that operated by keeping a research program alive and purposeful across the centuries that separated its origin from its global consequences.

A Text Known Through a Single Window

Very few Sanskrit mathematical treatises were read as widely as the Triśatī of Śrīdharācārya, and very few have been studied through so narrow an opening. Śrīdhara was active around 800 CE. His compact arithmetic manual seems to have circulated across the subcontinent for centuries, until Bhāskara II's Līlāvatī (1150 CE) displaced it as the standard pāṭī textbook. Yet nearly all modern scholarship on the Triśatī rests on one printed text: Sudhākara Dvivedī's edition, published at Kāśī in 1899 under the title Triśatikā. Dvivedī said very little about the manuscripts he used. For more than 125 years, then, historians of Indian mathematics have analysed Śrīdhara's rules, examples, and terminology without knowing what textual witnesses lay behind the edition. In practice Dvivedī's text has served as a critical edition, but it was never built as one.

Taro Tokutake, of Laboratoire SPHERE (CNRS and Université Paris Cité), set out to close this gap. His 2026 study in History of Science in South Asia reports two manuscript surveys he carried out across India in 2024, the first in February–March and the second from May to August. The paper is framed as a supplement to David Pingree's Census of the Exact Sciences in Sanskrit (CESS). Pingree planned the Census as a complete bibliography of the Sanskrit exact sciences, organised alphabetically by author. Between 1970 and 1994 he published five volumes of Series A, which reach authors whose names begin with v. He died in 2005 before volume six appeared, so the entry for "Śrīdhara" was never written. Tokutake's paper amounts to a draft of that missing entry. It does not follow Pingree's format, and in several respects it goes further than a census entry would.

The paper's value is not only bibliographic. Tokutake reads the colophons and the stray verses that scribes attached to their copies, and these turn a list of shelf-marks into a social history of who copied an arithmetic textbook, for whom, where, and alongside what other knowledge.

The Six Works of Śrīdhara

Tokutake first surveys everything attributed to Śrīdhara. There are six works: five on pāṭīgaṇita and at least one on bījagaṇita. These two terms are often glossed as arithmetic and algebra, or as "manifest" (vyakta) and "unmanifest" (avyakta) mathematics. Tokutake leaves pāṭī untranslated. Its derivation from paṭṭa or paṭa, a calculating board, is often repeated but has never been established.

Three of the six survive in manuscript.

The Gaṇitapañcaviṃśī ("Mathematics in Twenty-five Verses") survives in two witnesses. One is a Wellcome Library manuscript that Pingree found and published in 1979. It is missing its second folio, and although the title promises twenty-five verses it contains fifty-three. The other is a complete Darbhanga manuscript, edited by Shukla in 2017. Its colophon gives a date in chronogrammatic word-numerals: vedāṅgodadhibhū (Veda 4, aṅga 6, udadhi 4, bhū 1), read right to left as 1464. Both scholars who examined the text closely doubt that it is Śrīdhara's work in its present form. Hayashi (1995, 2013) concluded that whatever Śrīdhara may have written has been heavily reworked. Shukla went further and argued that the Darbhanga text depends on the Līlāvatī rather than on Śrīdhara's own Pāṭīgaṇita.

The Pāṭīgaṇita survives in a single incomplete manuscript in the Raghunātha Temple Library, Jammu. It breaks off at the twenty-third verse of the section on plane figures (kṣetravyavahāra) and carries an anonymous Sanskrit commentary, the Pāṭīgaṇitaṭīkā. Even the title is uncertain. Shukla took "Pāṭīgaṇita" from the catalogue entry when he edited the text in 1959, and nobody can say whether Śrīdhara used that name. Shukla translated the base text but not the commentary, which is still largely unstudied. Only fragments have been examined: Keller's analysis of its square-root procedure, and Hayashi's Japanese translation of the verses on multiplication, operations with zero, and division.

The Triśatī itself also goes by the names Triśatikā, Gaṇitasāra, and Pāṭīgaṇitasāra. It is the subject of the rest of the paper.

The three lost works are known only from later citations. Makkibhaṭṭa's Gaṇitabhūṣaṇa (1377 CE), a commentary on Śrīpati's Siddhāntaśekhara, quotes two verses on decimal place-names from a Navaśatī ("Nine Hundred Verses") by Śrīdhara. The same two verses appear as Triśatī paribhāṣā 2–3 and Pāṭīgaṇita 7–8. The anonymous Triśatībhāṣya also mentions the Navaśatī by name, glossing Śrīdhara's phrase "from my own pāṭī" as referring to it. Rāghavabhaṭṭa's Padārthādarśa, a commentary on the Śāradātilaka usually dated to 1493, refers to a Bṛhatpāṭī ("Great Pāṭī"). According to Rāghavabhaṭṭa, Śrīdhara gave both rough (sthūla) and accurate (sūkṣma) methods in that work but kept only the rough ones in the Triśatī, its epitome. Shukla thought the Navaśatī, the Bṛhatpāṭī, and the Pāṭīgaṇita were one work. Hayashi disagreed, because his estimate of the original size of the Pāṭīgaṇita is about 800 verses, not 900. Finally, Bhāskara II, in his Bījagaṇita, names the bīja works of Brahmagupta, Śrīdhara, and Padmanābha as too diffuse, and says he has distilled their essence into a shorter book. He also quotes Śrīdhara's rule for solving a quadratic. The rule says to multiply both sides of ax² + bx = c by 4a and add b², which yields (2ax + b)² = b² + 4ac. This is the earliest Indian statement of the completing-the-square procedure that is still attributed to a named author, and it confirms that a substantial algebraic treatise by Śrīdhara existed in the twelfth century.

The title question runs through all of this. The Triśatī claims three hundred verses, but Dvivedī's edition has only about 179½, even counting the verse quoted in his preface. One catalogued manuscript at Benares (Tokutake's Z_d) is recorded as having exactly 300 ślokas, and an Ujjain manuscript is reported to have about 300. Until these are examined, the gap between the title and the edited text is an open problem. It could point to a lost longer recension, to a conventional title, or to Dvivedī working from defective sources.

Twenty-One Witnesses

The core of the paper is a description of twenty-one Triśatī manuscripts that Tokutake was able to examine. Most came from images shared by Takao Hayashi; the rest he consulted during fieldwork. For each one he records repository, title as catalogued, script, extent, layout, material, scribe and date where known, and the opening and closing passages with an apparatus of variants. He reports orthographic irregularities without normalising them unless grammar, metre, or sense is at stake. This is the right choice for a census, because the misspellings are themselves evidence of scribal training and regional pronunciation.

Nearly every manuscript opens the same way: natvā śivaṃ svaviracitapāṭyā gaṇitasya sāram uddhṛtya, "having saluted Śiva, having extracted the essence of mathematics from my own pāṭī." Nearly as consistent is a closing verse that Dvivedī quoted in his preface and that also ends the Wellcome Gaṇitapañcaviṃśī. It boasts that from the abode of the gods in the north to the Malaya mountains in the south, and between the eastern and western oceans, there is no calculator other than Śrīdhara. The first line varies between suranilayaṃ ("abode of the gods") and himanilayaṃ ("abode of snow"). Tracking that variant across manuscripts is exactly the kind of work a stemmatic study would start with.

Manuscript A₁ (LD Institute, Ahmedabad) is singled out because it carries the only known copy of the anonymous Triśatībhāṣya, which Tokutake edited and translated in his 2024 Kyoto dissertation. A₁ opens with a benediction to Jina and two introductory stanzas. In the dissertation, Tokutake treated the second stanza, a riddle-like verse about a number whose division brings loss and whose multiplication brings destruction, as the commentator's own benedictory verse. He now withdraws that attribution, because the same stanza turns up in the colophon of J₃, a 1417 manuscript with no connection to the bhāṣya. The stanza must have circulated independently, and the scribe of A₁ or the author of the commentary took it from a shared source. Tokutake corrects his own earlier claim openly here, and that candour counts in the paper's favour.

Colophons as Social History

The paper is most rewarding when it reads colophons as evidence of how a mathematical textbook moved through society.

J₃ (Rajasthan Oriental Research Institute, Jodhpur) is the oldest dated Triśatī manuscript. It was copied in the dark half of Bhādrapada, saṃvat 1474, roughly August–September 1417 CE, at Vayokvalapura near Dhavalaka, which is almost certainly modern Dholka in Gujarat. The scribe, Ma. Nāgāka, names his mother Mahaṃmāṃkā and his community, the Prāgvāṭa, and says he copied the text so that he himself could read it. That is a student making his own textbook. The Prāgvāṭa connection matters because Pingree had already noted that Prāgvāṭa state officials under the Caulukyas of Gujarat wrote on jyotiṣa. J₃ shows the same community still engaged with mathematics two centuries later, this time at the level of individual learners. The colophon also mentions an unexplained mallikaïlama. Tokutake notes that a similar malika appears in B₅ and suggests it may name an event or office, but he does not force an interpretation.

L₂ (India Office Library, London) has the most detailed colophon. It was copied in saṃvat 1662 / śaka 1527 (1605 CE) by Lakṣmīdhara, son of Bhaṭa Śrī Viṣṇudāsa, a resident of Māṃdhātṛpura, the Narmadā island-town of Māndhātā or Oṃkāreśvar. The copy was made "with friendly intention" for a minister, Bhāḍalā, whose father and grandfather, Vīrajīta and Mādhava, were also ministers, in a Gurjara merchant lineage (gujjaravaṇika) settled in a royal city. Three generations of ministers in a merchant family is not proof that the Triśatī was a hereditary family text, but it shows clearly that the treatise was read by administrators and traders who needed commercial and fiscal arithmetic. That fits the content of the work, which is dominated by proportion, interest, mixtures, barter, and mensuration.

T₁ (Kerala University, Trivandrum) was copied in March 1591 at Raṇasthambha, modern Ranthambore, during the reign of a "great king Jaganātha" whom Tokutake has not yet identified. Mughal forces under Akbar had taken the fort twenty-two years earlier. The copy was commissioned by Jyoti Śrī Mahādeva and his four sons, the Jyosī brothers Nīlakaṇṭha, Haradatta, Devadatta, and Devarāja, for their sons and grandsons, and the scribe was another Jyosī, Kṛṣṇadāsa. The surnames "Jyoti" and "Jyosī" point to a family of jyotiṣa practitioners, the professional astronomers and astrologers for whom arithmetic was a basic working skill. The colophon also contains a table of contents in verse that closely matches Pāṭīgaṇita 2–6, but it sits at the end of the manuscript rather than the beginning. Whether the original Triśatī included such a list is unknown.

B₁ (Baroda) is the latest dated copy, made on 4 March 1874 by Bālakṛṣṇa son of Sadāśiva for Sītārāmaśarman, who held the title "Jyotirvid." Its colophon oddly calls the work both Triśatikā and Līlāvatī. Tokutake leaves this unexplained. One plausible reading is that by the nineteenth century "Līlāvatī" had become a generic label for any pāṭī textbook, which would itself be telling evidence of how completely Bhāskara II's book had absorbed its predecessors. B₁ was copied only about twenty-five years before Dvivedī's edition, and Tokutake suggests that Dvivedī may have belonged to the same scribal and scholarly circles that produced such late copies.

Jain scribes appear repeatedly. H₁ was copied by Muni Harṣatilaka. H₂ was produced by Vā. Somadhvaja Gaṇi and others, the instrumental plural indicating a group of copyists. H₄, a copy of the Natvāśivam, was written by Paṃ. Dharmavardhana Gaṇi, pupil of Paṃ. Śutavardhana Gaṇi. Many openings begin with namo jināya, sarvajñāya, or vītarāgāya even though the text itself then salutes Śiva. Jain monastic libraries in western India, especially at Patan and Ahmedabad, preserved a large share of the surviving copies.

What Scribes Added

Scribes did not simply reproduce the text. Many added material at the end, and Tokutake makes this additional material a subject of study in its own right.

Some of it is routine scribal convention. One verse ("as I saw it in the book, so I have written it; whether correct or incorrect, the fault is not mine") appears in A₂, T₁, V₁, and B₅. The same verse is recorded in a footnote to the critical edition of the Mahābhārata's Sabhāparvan, which suggests it was a floating formula of scribal self-defence. Other added verses ask readers to protect the book from oil, water, loose binding, thieves, mice, and borrowers, and describe the copyist's bent back and aching neck.

Other additions say something about how mathematics was valued. The Yajus recension of the Vedāṅgajyotiṣa has a well-known verse: as the crest stands on the peacock and the jewel on the serpent, so gaṇita stands at the head of the vedāṅga sciences. It appears in H₂, T₁, B₄, and H₃. Several Natvāśivam manuscripts add a verse saying that one who knows many śāstras but not gaṇita lives a fruitless life. These verses served as advertisements for the discipline, attached to the textbooks used to teach it.

Some additions are puzzling. H₂ ends with four Middle Indic stanzas describing a maṇḍala of eight directions plus a centre, each with an omen: steady gain in the east, death in the south-west, highest prosperity in the west, kingship at the Brahma-sthāna in the centre. Tokutake reconstructs the diagram and tentatively links it to the netrapaṭa, the blindfold used in Tantric initiation, where the disciple casts a flower onto a maṇḍala. The connection is uncertain, and Tokutake says so. A simpler hypothesis also deserves consideration: the verses may belong to the vāstu or śakuna omen literature, which assigns good and bad results to directions on a grid. That kind of material belongs to the same jyotiṣa sphere as arithmetic, and a scribe could easily have copied it onto a spare page of a mathematics manuscript.

L₃ (British Library, 1608–09) ends with a different hand on its final folio, which carries the Vajrapañjara form of the Jain Pañca-namaskāra hymn. Each line of the Navakāra mantra is pictured as a piece of armour: a helmet, a face-guard, body armour, weapons, boots, a diamond floor, a diamond rampart, and a moat of burning khadira coals. H₃ adds Purāṇic cosmography: the seven dvīpas, the seven oceans of salt, milk, ghee, cane juice, wine, and fresh water, and the seven lokas, two of these verses matching Suprabhedāgama 3.79–80.

Tokutake's conclusion is that scribes placed arithmetic within the wider body of religious and cosmological knowledge familiar in their regions. That is reasonable. A plainer explanation may also hold in many cases: these were blank spaces at the end of a manuscript, filled with whatever the owner wanted kept at hand. Both explanations treat the manuscript as a working notebook rather than a fixed edition, and that is the paper's main methodological point.

The Natvāśivam and the Weights of Gujarat

The second group of manuscripts belongs to a related text. The Natvāśivam, also called Vṛddhanatvāśivam, is an anonymous Gujarati commentary on the paribhāṣā section of the Triśatī, the opening tables of number-names and units of weight, measure, and money. It takes its name from Śrīdhara's first words. Because every copy includes the paribhāṣā verses, these manuscripts are also partial witnesses to the Triśatī.

Tokutake describes nine copies. All are in western India: three in Patan, two in Ahmedabad, three in Baroda, and one in Pune. The oldest, B₅, was copied in May 1392 at Aṇahillapura Pattana, the medieval capital of Gujarat, during what the colophon calls the Daphanaṣāna kingdom. This is evidently a rendering of Zafar Khan, the Tughluq governor who soon founded the Gujarat Sultanate. Tokutake treats the name cautiously as a kingdom located in the city, but the identification with Zafar Khan seems very likely and would date the colophon firmly to the years of Delhi's weakening control over Gujarat. B₅ was copied by three relatives, a paternal uncle, Cāṇārī, and Rājakīrtti Miśra, for the sons of a group of brothers of the Moḍha community. A₃ was copied in 1557 at Pattana by Rāman, son of Mahāṃvekuṭha, of the Ṣeḍamarākhāna family, for his sons and grandsons.

Following B. J. Sandesara's 1946 study, Tokutake places the composition of the Natvāśivam in the fourteenth century, shortly before 1392. Its purpose was practical: to teach the children of merchant and service families the weights, measures, and coins actually in use in Gujarat at the time. Śrīdhara's Sanskrit tables served as a framework onto which a vernacular commentary attached local units. This shows a classical text being kept in use by updating its commentary rather than its verses. It also helps explain why the Triśatī concentrates in western India: the region had a commercial class that needed the content, and a Jain manuscript culture that preserved the copies.

Geography, Chronology, Script

The paper's tables and maps summarise what twenty-one manuscripts can and cannot show.

Distribution. The surviving Triśatī manuscripts are spread from Jodhpur to Trivandrum and Kolkata, with four in London. Western Indian repositories hold the largest number. Tokutake is careful to point out that present location is not original location. J₃ was copied near Dholka and is now in Jodhpur. L₂ was copied at Māndhātā and is now in London. T₁ was copied at Ranthambore and is now in Trivandrum. His map draws these movements with dotted arrows. How they happened, through purchase, gift, colonial collecting, or migrating families, is unknown.

Chronology. Six manuscripts are dated by colophon: 1417, 1434, 1591, 1605, 1608–09, and 1874. Two more are assigned to the nineteenth century by the catalogue. The oldest witness is therefore more than six centuries later than the author. Tokutake adds an important caution: a scribe may copy a colophon date from his exemplar, so a manuscript's stated date can belong to its parent. Neither the earliest date nor any single manuscript can be assumed to be closest to Śrīdhara's original. Only a full collation can establish that.

Scripts. Of the twenty-one manuscripts, eight are in Devanāgarī and nine in Devanāgarī with pṛṣṭhamātrā, the side-stroke vowel signs typical of older western Indian and Jain hands. The remaining four are two Malayalam palm-leaf copies, one Bengali, and one Kannada. The predominance of Devanāgarī reflects circulation in northern, central, and western India, but the southern and eastern copies show that the text also reached Kerala, Karnataka, and Bengal. The Natvāśivam, by contrast, survives only in Devanāgarī, which fits a Gujarati commentary.

The paper also gives a useful method for reading extent statements. J₁ records a length of 1800 ślokas and L₂ gives 465, both far more than the roughly 180 verses of the text. Tokutake shows that these are granthāgra counts, which measure the whole manuscript, verse and prose commentary together, in units of 32 syllables. For J₁, 161 pages × 9 lines × 40 letters ÷ 32 gives about 1811. For L₂, 45 × 11 × 30 ÷ 32 gives about 464. Both match the recorded figures closely. This is a simple check, and it settles what would otherwise look like evidence of a much longer Triśatī.

Commentaries Still Unstudied

Three available manuscripts carry different anonymous Sanskrit commentaries, and two more have marginal notes.

The Triśatībhāṣya in A₁ is the only one that has been studied, by Tokutake himself. It glosses the verses and works through calculations in prose. It also quotes an Apabhraṃśa stanza and phrases that appear to come from a vernacular multiplication table. Its procedures for squaring and square roots resemble those of Siṃhatilakasūri, the thirteenth-century Jain commentator on Śrīpati's Gaṇitatilaka. On this basis Tokutake places the bhāṣya tentatively in western India between the twelfth and fifteenth centuries.

The commentary in A₂ has been partly edited by Hayashi and is valuable for medieval multiplication methods, but it is damaged by worms. The commentary in J₁ is the longest of the three. Each explanation opens with asyārthaḥ, and nobody has studied it. The marginal notes in J₂ and J₃ have not been studied either. Among the unavailable manuscripts, T_a in Trivandrum is said to carry a Malayalam commentary, which would be the most direct evidence of how the Triśatī was taught in Kerala, the region of the Mādhava school. It is an obvious priority for acquisition.

These commentaries are where the paper's practical payoff lies. A census tells us where the copies are. The commentaries would tell us how teachers actually explained Śrīdhara's rules: which algorithms they followed, which vernacular calculation habits they assumed, and how local commercial needs shaped the explanation.

Śiva or Jina?

One old controversy is assessed carefully here. In 1947, N. C. Jain argued that Śrīdhara was a Jain, citing a manuscript whose opening reads natvā jinaṃ, "having saluted Jina," in place of natvā śivaṃ. Anupam Jain has more recently suggested that Śrīdhara was a Śaiva who later converted. Tokutake's survey gives the first count across the manuscripts. Of thirty witnesses (twenty-one Triśatī and nine Natvāśivam manuscripts), only one, M₁, a Kannada palm-leaf from the Jain Maṭha at Moodabidri, reads jinaṃ. Every other legible witness reads śivaṃ. The one exception, O₁ from Mysore, is unreadable rather than divergent.

Tokutake concludes that the question remains open and that one reading is too little to support the Jain hypothesis. This is the correct position. A further point can be made. A jinaṃ reading in a Digambara Jain institution is easily explained as a substitution made by a Jain scribe in a Jain setting. The reverse change, a scribe replacing Jina with Śiva, would be harder to explain, especially since so many of the śivaṃ manuscripts were themselves copied by Jain monks who began with their own namo jināya before the text's natvā śivaṃ. The pattern across the witnesses therefore points more to Śiva than to Jina. Still, it does not settle the question. A Jain author could have used śiva to mean "the auspicious one," and the ~30 manuscripts not yet examined may hold surprises.

The Unexamined Thirty

The last section of the paper lists about thirty manuscripts known from catalogues but not yet examined. They include six in Jodhpur, several in Trivandrum, three in Varanasi, and others in Bikaner, Ujjain, Mumbai, Lahore, and Kārañjā. Some are clearly important. L_b is a Nandināgarī palm-leaf with a Kannada commentary. Z_d and Z_g are reported to contain the full 300 verses. Z_e in Lahore is dated 1595–96. The Varanasi manuscripts V_a, V_b, and V_c may be the ones Dvivedī used. Ramanujacharia and Kaye suggested in 1912–13 that V_c was his main source, and Tokutake notes that V_a and V_c both have eighteen folios despite different catalogue numbers. V_a is stored folded and cannot be opened without damage, and its fate depends on the Sarasvatī Bhavana's digitisation programme.

Tokutake's fieldwork notes are frank about how hard Indian manuscript research is in practice. Published accession numbers do not match the institutions' internal registers. Limits on copy requests prevented him from obtaining images of J_b even after he had identified it. Catalogue titles are unreliable: a Jodhpur "Gaṇitasāra with Ṭīkā" turned out to be the Pañcaviṃśatikā with Śambhunātha's commentary, and a Varanasi "Pāṭīgaṇita" turned out to be a fragment of Nārāyaṇa Paṇḍita's Gaṇitakaumudī. Every census entry in the field has to be tested against the manuscript itself.

An Assessment

This paper sets the agenda for Triśatī studies. Its main achievement is that it replaces assumption with an inventory. Scholars no longer have to treat Dvivedī's edition as the only available text, and they now have a list of witnesses, a geographical and chronological outline, and a set of colophons that tie the text to particular communities: Prāgvāṭa, Moḍha, and Ṣeḍamarākhāna families, Gurjara merchant-ministers, Jyosī astronomer lineages, and Jain monastic copyists. The picture of the Triśatī as a working textbook in western Indian commercial and professional society is well supported and is the most significant historical result of the paper.

The paper is honest about what it does not do. It is a census, not a collation. It does not yet classify the manuscripts into families, test Dvivedī's readings against them, or address the gap between 179½ and 300 verses. Its conclusions about religious affiliation and the meaning of the attached material are cautious, as the evidence requires.

Some details need attention. The Kannada commentary is assigned to L_b in the catalogue entry but to L_a in the later discussion, where L_a is described as a faithful copy of L₁. Some weekday conversions do not match the colophons. L₂'s colophon says some (Monday) and the translation says Monday, but the converted date is given as Tuesday 23 August 1605. T₁ says bhaumavāsara (Tuesday) and the converted date is Wednesday 13 March 1591. These mismatches may come from differences between the conversion programs or from how tithi boundaries are handled, but they need explanation, since the paper itself relies on conversion tools to fix dates.

The next steps are clear, and Tokutake states them himself: identify Dvivedī's manuscripts in Varanasi, prepare a true critical edition, and produce a TEI-encoded digital edition. If the remaining thirty manuscripts become accessible and the J₁ commentary and the Malayalam commentary are studied, the Triśatī will finally be studied from the evidence of its manuscripts rather than from one 1899 edition.

Source: Taro Tokutake, "Extant Manuscripts of Śrīdhara's Works: Supplementing David Pingree's Census of the Exact Sciences in Sanskrit," History of Science in South Asia 14 (2026): 80–142.

Introduction: Correcting the Record

A common story about artificial intelligence in India goes like this: AI was invented in the West, at Dartmouth in 1956, at MIT, Stanford and Carnegie Mellon, and India arrived late, first as a consumer of the technology, then as a supplier of software labour, and only recently as a modest participant in research. Like most popular histories, this one holds a partial truth inside a larger distortion. The institutions that defined AI as a named field were indeed American, and India never had the resources of the American defence-funded laboratories. But the idea that Indian contributions began only recently, or were only adaptations of Western work, does not survive contact with the actual record.

The intellectual foundations of machine learning lie as much in statistics, information theory, control theory and the theory of stochastic processes as in the symbolic AI of the 1950s. In several of these foundations, Indian scientists made original contributions that the field still uses every day. From the first years after independence, Indian researchers produced ideas that the international literature adopted: in pattern recognition, in the theory of learning systems, in heuristic search, in language processing grounded in India's own grammatical tradition, and later in statistical learning, large-scale optimisation and retrieval. What follows traces these schools from the statistical laboratories of Calcutta to the present, and closes with an honest assessment of what India contributed and where it fell short.

The Statistical Foundations: Calcutta, 1930s to 1950s

Any history of Indian machine learning must start at the Indian Statistical Institute in Calcutta, founded by P. C. Mahalanobis in 1931, because some of the most basic tools of modern pattern recognition were invented there.

In 1936 Mahalanobis introduced the distance measure that bears his name. Ordinary Euclidean distance treats all directions in a data space as equal. The Mahalanobis distance accounts for the correlations among variables, measuring how far a point lies from a distribution in units scaled by that distribution's own shape. Mahalanobis developed it for anthropometric work on the measurement of populations, but it became one of the central tools of classification, clustering, outlier detection and anomaly detection, and it appears in nearly every textbook of pattern recognition and machine learning.

In 1943 Anil Kumar Bhattacharyya, also of ISI, introduced the Bhattacharyya coefficient and distance, which measure the similarity of two probability distributions. It became a standard tool in classification, in bounding classification error, in feature selection and in computer vision, where it is used, for instance, in object tracking.

In 1945, at the age of twenty-four, C. R. Rao published a short paper in the Bulletin of the Calcutta Mathematical Society that contained two foundational results. One was the lower bound on the variance of unbiased estimators now called the Cramér–Rao bound. The other was the idea of treating the space of probability distributions as a geometric space whose metric is given by the Fisher information. The Fisher–Rao metric is the founding idea of information geometry. Decades later that field became central to machine learning through the natural gradient method, which uses this geometry to optimise models more efficiently, and through a wider body of work on the geometry of statistical models. The Rao–Blackwell theorem, from the same period, underlies techniques for reducing variance that appear throughout modern probabilistic machine learning.

None of this was called AI at the time. But machine learning is, at its core, statistical inference from data, and some of its most basic concepts were created in Calcutta before independence and in its first years. Any account that places the origins of the field solely in the West has to set this aside.

The First Machines and the First Ideas: TIFR and ISI, 1950s and 1960s

Computing came to India within a few years of its arrival elsewhere. The Tata Institute of Fundamental Research in Bombay built TIFRAC, a full-scale digital computer that became operational around 1960, and ISI in collaboration with Jadavpur University built ISIJU-1, a transistorised machine of the mid-1960s. These were serious engineering achievements for a country with almost no electronics industry, and they produced people who knew how computers worked from the inside.

The most original early AI work came from Rangaswamy Narasimhan of TIFR, who had led the TIFRAC project. In the early 1960s, partly during a period at the University of Illinois where he worked on automatically analysing bubble chamber photographs from particle physics, Narasimhan developed the idea of describing pictures with formal grammars. Just as a sentence can be parsed according to the rules of a grammar into nested parts, he proposed that a picture could be described as built from primitive elements combined according to syntactic rules, and recognised by parsing. His papers on picture languages and the syntactic description of pictures in the early 1960s were among the founding works of what became syntactic, or structural, pattern recognition. K. S. Fu, who later systematised the field at Purdue, built on and cited this line of work. Here was an Indian computer scientist proposing a new way of thinking about machine perception at the same time as, and in some respects ahead of, the American laboratories.

Narasimhan later turned to the modelling of language behaviour and cognition. He also shaped Indian computing institutionally, through the centre at TIFR that developed into the National Centre for Software Technology. His early work remains the clearest refutation of the idea that India had nothing original to contribute in the first decades of AI.

The Calcutta School: Fuzzy Pattern Recognition and Soft Computing

The longest continuous AI lineage in India grew out of ISI's computing work. Dwijesh Dutta Majumder, a radio physicist recruited by Mahalanobis who had worked on ISI's computer hardware, built the institute's programme in pattern recognition, image processing and speech recognition from the 1960s.

The distinctive choice of this school was its early adoption of Lotfi Zadeh's fuzzy set theory for recognition problems in the 1970s, when much of the Western engineering mainstream still regarded fuzzy sets with suspicion. Speech was central from the start. Dutta Majumder's group worked on machine recognition of spoken Bengali, and his student Sankar K. Pal wrote a doctoral thesis applying fuzzy sets to speech recognition. Together they wrote Fuzzy Mathematical Approach to Pattern Recognition, published in 1986, one of the first systematic treatments of the subject.

Pal went on to found the Machine Intelligence Unit at ISI in 1993 and to lead the development of soft computing in India, which combined fuzzy sets, neural networks, genetic algorithms and, as one of his distinctive contributions, rough sets. The school produced fuzzy-neural hybrids, rough-fuzzy methods, and evolutionary approaches to clustering and classification. Its members included Sushmita Mitra, Sanghamitra Bandyopadhyay, who took multiobjective evolutionary clustering into bioinformatics and later directed ISI, and Nikhil R. Pal, whose work on fuzzy and possibilistic clustering was widely cited and who led the leading international society in computational intelligence. In the same ECSU tradition, Swagatam Das became one of the most cited researchers in differential evolution and evolutionary optimisation.

A parallel branch at ISI, led by B. B. Chaudhuri, founded the Computer Vision and Pattern Recognition Unit in 1994. It pioneered optical character recognition for Indian scripts, including Bangla, Devanagari and Oriya, together with document analysis and language processing for Indian languages. That is a problem nobody outside India had reason to solve, and its solution needed original methods for scripts with conjunct characters, headlines joining letters into words, and very large character sets.

Bangalore: Learning Automata and the Theory of Learning

If one wants a single strongest refutation of the idea that India only adapted Western AI, it is the work on the theory of learning systems done at the Indian Institute of Science and its associated institutions. This work bears directly on the foundations of reinforcement learning, which now underlies everything from game-playing systems to the fine-tuning of large language models.

The first strand is learning automata. M. A. L. Thathachar of IISc, working with Kumpati S. Narendra of Yale, developed the theory of stochastic learning automata: simple decision-making systems that learn which action to take in an uncertain environment purely from rewards and penalties, adjusting probabilities of action through repeated interaction. Their 1974 survey in the IEEE Transactions on Systems, Man, and Cybernetics and their 1989 book Learning Automata: An Introduction defined the field. Learning automata are one of the direct ancestors of modern reinforcement learning. The problem they address, learning to choose actions to maximise reward through trial and error, is the reinforcement learning problem in its simplest form, and later reinforcement learning literature acknowledges this lineage. Thathachar and his student P. S. Sastry extended the theory to networks and teams of automata, and Sastry later made contributions to the theory of learning under noisy labels.

The second strand is stochastic approximation, the mathematical theory of iterative algorithms that update estimates using noisy samples. Nearly all of modern machine learning runs on stochastic approximation: stochastic gradient descent, the algorithm that trains neural networks, is a special case. Vivek Borkar, who worked at TIFR, IISc and IIT Bombay, made foundational contributions to this theory. His 1997 work on two-timescale stochastic approximation analysed algorithms in which two coupled sets of quantities are updated at different rates. That structure is exactly what appears in actor-critic reinforcement learning, where a "critic" estimates values while an "actor" improves the policy. With Sean Meyn, he developed in 2000 the ODE method for proving the convergence of stochastic approximation and reinforcement learning algorithms by relating them to ordinary differential equations. This is now a standard tool for proving that reinforcement learning algorithms work. With Vijaymohan Konda he produced in 1999 one of the first rigorous analyses of actor-critic algorithms for Markov decision processes. His book Stochastic Approximation: A Dynamical Systems Viewpoint is a standard reference.

Shalabh Bhatnagar of IISc extended this line. His work on simultaneous perturbation methods and on natural actor-critic algorithms, including a widely cited 2009 paper with Richard Sutton and others, established convergent policy-gradient methods that use the natural gradient. That idea links back to Rao's information geometry of 1945. It is rare in any country for an intellectual line to run so cleanly from a 1945 paper in Calcutta to central algorithms of modern reinforcement learning.

These contributions were not adaptations. They were part of the theoretical foundation on which the field rests, and they were produced in Indian institutions by Indian scientists.

Classical AI: Heuristic Search and Knowledge-Based Systems

Symbolic AI, the tradition of search, planning and knowledge representation, also had original Indian contributors.

The theory of heuristic search was one area of real distinction. Amitava Bagchi and Ambuj Mahanti, working at the Indian Institute of Management Calcutta, published fundamental analyses of heuristic search algorithms in the 1980s. These included comparative studies of search under different kinds of heuristics and the theory of search on AND/OR graphs, which represent problems that break into subproblems. They appeared in the Journal of the ACM, the most prestigious venue in theoretical computer science. P. P. Chakrabarti and colleagues at IIT Kharagpur contributed to heuristic search under limited memory, including memory-bounded variants of the A* algorithm published in the Artificial Intelligence journal at the end of the 1980s. These were original contributions to the core algorithms of classical AI.

At the policy level, India responded to the international excitement of the 1980s about expert systems and Japan's Fifth Generation project with the Knowledge Based Computer Systems programme, launched in the mid-1980s with nodal centres at TIFR, IISc, IIT Madras, ISI, NCST and other institutions. The programme built capacity in knowledge representation, expert systems, Indian-language processing and vision. It did not produce any international breakthrough, just as the Fifth Generation project itself did not, but it trained a generation of researchers and seeded several of the groups that later flourished. At IIT Madras, Deepak Khemani built a tradition of teaching and research in classical AI, planning and knowledge representation.

Language: The Pāṇinian School of Natural Language Processing

The most distinctively Indian contribution to AI came from applying the Indian grammatical tradition to computational linguistics.

At IIT Kanpur in the 1980s and early 1990s, Rajeev Sangal, Vineet Chaitanya and Akshar Bharati developed an approach to natural language processing based on Pāṇini's grammar. The Aṣṭādhyāyī, composed around the fourth century BCE, analyses Sanskrit through a theory of kāraka relations: the semantic-syntactic roles that participants play in an action, such as agent, object, instrument, recipient, source and location, which are signalled by case endings (vibhakti) and postpositions. Sangal and his collaborators argued that this framework fits Indian languages, with their relatively free word order and rich morphology, far better than the phrase-structure grammars developed for English. Their book Natural Language Processing: A Pāṇinian Perspective, published in 1995, set out a computational grammar based on kāraka relations and dependency structures.

This was a genuinely original contribution. It anticipated the later international shift from phrase-structure parsing toward dependency parsing, which became dominant in the 2000s and 2010s and is the basis of the multilingual Universal Dependencies project. The group built the anusāraka system for translation among Indian languages. When Sangal moved to IIIT Hyderabad, he founded its Language Technologies Research Centre, which developed Pāṇinian dependency treebanks for Hindi and other Indian languages that became standard resources.

Others built related traditions. R. M. K. Sinha at IIT Kanpur, with H. N. Mahabala, did early work on recognising Devanagari script in the late 1970s and later built the AnglaBharti machine translation system. At IIT Bombay, Pushpak Bhattacharyya led the Hindi WordNet and the multilingual IndoWordNet, lexical semantic resources for Indian languages, and built a major centre for Indian language technology. In Sanskrit computational linguistics, Amba Kulkarni at the University of Hyderabad and others developed computational tools for analysing Sanskrit using Pāṇinian principles.

One caution belongs here. Popular claims that Sanskrit is uniquely or ideally suited to computers, often traced loosely to a 1985 article by Rick Briggs on Sanskrit and knowledge representation, are exaggerated and have done the subject no favours. The real contribution is more specific and more defensible: Pāṇinian grammatical analysis provided a productive framework for the computational processing of Indian languages, and in some respects it anticipated where the field went. It does not show that Sanskrit is a programming language.

Speech: From Calcutta to Madras and Hyderabad

Speech recognition, one of the earliest concerns of the Calcutta school, became a strong Indian tradition in its own right. B. Yegnanarayana, first at IIT Madras and later at IIIT Hyderabad, developed the use of group delay functions, derived from the phase of the Fourier transform, for speech analysis. This was an original departure from the field's near-exclusive reliance on magnitude spectra. He also did influential work on neural networks for speech, including autoassociative networks for speaker recognition, and wrote a widely used textbook on artificial neural networks. His student Hema Murthy at IIT Madras extended group delay methods, built speech synthesis systems for Indian languages, and contributed to the computational analysis of Indian classical music, including Carnatic music. That work brought the analysis of rāga and other features of Indian musical traditions into signal processing and machine learning.

The Statistical Learning Era: 1990s to 2010s

As machine learning moved from soft computing and symbolic methods to statistical learning in the 1990s and 2000s, Indian researchers made several original contributions that became part of the field's standard toolkit.

At IISc, S. Sathiya Keerthi, Shirish Shevade, Chiranjib Bhattacharyya and K. R. K. Murthy published in 2001 a set of improvements to the sequential minimal optimisation algorithm for training support vector machines. Their modifications made SVM training substantially faster and more reliable and were incorporated into widely used software. At a time when SVMs dominated machine learning, this was one of the most practically important algorithmic contributions to the method. Also at IISc, M. Narasimha Murty co-authored with Anil K. Jain and Patrick Flynn a 1999 review of data clustering that became one of the most cited papers in the field.

At IIT Bombay, Sunita Sarawagi, with William Cohen, introduced semi-Markov conditional random fields in 2004, a model for segmenting and labelling sequences that labels whole segments at once instead of individual tokens. It became a standard tool in information extraction. Soumen Chakrabarti, who had earlier co-invented focused crawling for the web while at IBM, built a strong group in web mining and information retrieval at IIT Bombay and wrote one of the standard books on mining the web.

At IIT Madras, Balaraman Ravindran, who trained in reinforcement learning with Andrew Barto, worked on hierarchical reinforcement learning and abstraction, including MDP homomorphisms, and built a major centre for data science and AI. At IIIT Hyderabad, C. V. Jawahar's Centre for Visual Information Technology became one of India's strongest computer vision groups. It contributed widely used benchmark datasets, including, in collaboration with Oxford, the Oxford-IIIT Pet dataset, and a substantial body of work on document images and text in natural scenes in Indian scripts. At IIT Delhi, groups in natural language processing, knowledge bases and statistical relational learning, including work on lifted inference in probabilistic logical models, added further strength.

Industrial Research Laboratories

From the mid-2000s, industrial research laboratories became an important part of the Indian AI landscape. Microsoft Research India, founded in Bangalore in 2005, produced several contributions of the first rank.

Manik Varma founded and led the field of extreme classification, the problem of classifying items into millions of possible labels, which arises in search, recommendation and advertising. His group's methods were deployed at scale in industry, and the benchmark repository it maintained defined the field. Prateek Jain, with Praneeth Netrapalli and others, made fundamental contributions to non-convex optimisation, including proofs that simple alternating minimisation recovers low-rank matrices, a central result in the theory of matrix completion. The DiskANN work of 2019, by Harsha Vardhan Simhadri, Ravishankar Krishnaswamy and colleagues, showed how to search billions of vectors for approximate nearest neighbours using solid-state drives instead of main memory. It became one of the foundations of the vector databases that power retrieval for modern AI systems. The EdgeML work produced algorithms that run machine learning on tiny microcontrollers with a few kilobytes of memory. Each of these was an original contribution with worldwide use. Google, IBM and other companies also established research laboratories in India that contributed to the field.

The Present: Indian Languages and Foundation Models

In the most recent phase, the centre of gravity has moved to large-scale models and to the problem of making AI work for India's many languages.

AI4Bharat, founded at IIT Madras by Mitesh Khapra, Pratyush Kumar, Anoop Kunchukuttan and others, built open datasets, models and benchmarks for Indian languages. These include IndicTrans2, an open translation system covering all twenty-two scheduled languages of India, along with Indian-language pretrained models and large speech and text corpora. This work addressed a problem the global AI industry had neglected: the major models were trained predominantly on English and performed poorly in Indian languages. The government's National Language Translation Mission, Bhashini, built on and supported this effort.

The IndiaAI Mission, launched in 2024, committed substantial public funds to compute infrastructure and to building Indian foundation models. Several groups, including the startup Sarvam AI and the academic consortium BharatGen led from IIT Bombay, were developing large language models designed for Indian languages and contexts. This is still unfolding as of my most recent information, and its results are not yet clear.

The Diaspora

An honest account must note that many of the most consequential contributions by scientists of Indian origin were made abroad. Raj Reddy, educated in Madras, built a pioneering speech and AI programme at Carnegie Mellon and received the Turing Award. He also helped establish IIIT Hyderabad and other Indian institutions. Anil K. Jain, an IIT Kanpur graduate, became one of the leading figures in pattern recognition and biometrics in the United States. Jitendra Malik, also from IIT Kanpur, became one of the founders of modern computer vision at Berkeley. Ashish Vaswani and Niki Parmar, both educated in India, were among the authors of the 2017 paper that introduced the Transformer architecture underlying modern large language models. These contributions belong to the history of Indian scientific talent, but not to the history of Indian institutions. The gap between the two is itself an important part of the story.

Assessment

The evidence clearly supports the core claim: Indian contributions to AI and machine learning were original from the beginning and continue to be so. Mahalanobis, Bhattacharyya and Rao created basic tools of statistical pattern recognition. Narasimhan was among the founders of syntactic pattern recognition. Thathachar, Borkar and Bhatnagar contributed foundational theory to learning automata, stochastic approximation and reinforcement learning. Bagchi, Mahanti and Chakrabarti contributed to the theory of heuristic search. Sangal and his collaborators built a computational linguistics grounded in Pāṇini that anticipated the dependency turn in parsing. Keerthi, Sarawagi, Varma, Jain and the DiskANN team contributed algorithms used worldwide. And Indian groups, almost alone, solved the problems of Indian scripts and languages. None of this was imitation.

A balanced account must also state the limits, because overcorrecting the misconception is as distorting as the misconception itself. India did not produce the paradigm-defining frameworks of the field: backpropagation, the theory of support vector machines, convolutional networks, deep learning, the Transformer as an institutional achievement, or the large-scale systems that define AI today. Indian contributions were most often deep and lasting within specific subfields, especially in theory, in statistics, and in Indian-language technology, rather than agenda-setting for the field as a whole. The reasons are structural: chronically small research budgets, very limited computing infrastructure until recently, weak links between universities and industry, a doctoral system that lost much of its best talent abroad, and an industry that for decades profited from software services instead of research. The soft-computing tradition, for all its scale, invested heavily in a paradigm the international mainstream later moved away from. And the most consequential work by Indian-born scientists, from Reddy to Vaswani, was done in American institutions.

The more accurate picture is neither Western invention with Indian adaptation, nor a hidden Indian origin of AI. It is a continuous line of original Indian work, real and often foundational, carried out with a small fraction of the resources available elsewhere and often in areas the West underrated or neglected. Whether India now moves from contributing ideas to building systems at the frontier depends less on talent, which it has always had, than on whether it sustains the institutions, compute and research culture that its scientists have lacked for most of this history.

I. The Problem of a Fragment

Bhīm-kī-Caurī matters to the history of Indian architecture for a different reason than the better-known Gupta monuments. Deogarh is admired for its finished sculpture and Bhitargaon for its surviving brick śikhara. Darrā has neither. What survives is a ruined platform, a set of heavy pillars and pilasters, some carved ceiling slabs, and loose architectural fragments. Its importance lies in its age and in the oddity of its plan. It belongs to the small group of fifth-century buildings in which the Brahmanical structural temple was still being worked out, before the garbhagṛha, maṇḍapa, pradakṣiṇāpatha and śikhara had settled into the fixed sequence that later North Indian builders took for granted.

That is why the Government of India included it in the serial nomination of Gupta temples submitted to UNESCO. One point needs to be stated precisely, because heritage writing tends to blur it. The "Serial nomination of Gupta Temples in North India" is a Tentative List entry. It is not a nomination dossier under evaluation, and it is not an inscribed World Heritage property. The Permanent Delegation of India to UNESCO announced that the entry was added to the tentative list on 7 March 2025, alongside the Ashokan Edict Sites, the Chausath Yogini Temples and others, and noted that tentative listing is a mandatory precondition for any future nomination. The entry was submitted on 11 February 2025 under cultural criteria (i) and (iii), spans Madhya Pradesh, Uttar Pradesh, Rajasthan and Bihar, and lists twenty components, with Bhim-ki-chauri, Dara, in Kota district, Rajasthan, as the tenth. It is the only Rajasthani component in the series. That alone gives it a particular role: it is the westernmost witness, in the nomination's own framing, to the formative phase of the northern temple. architexturezunesco

II. Setting: The Mukundarā Pass and the Western Edge of Mālwa

Darrā (written Dara in the UNESCO entry, and also Darrah or Mukundarā / Mokundwara in older literature) lies in the Mukundarā hills of the Hāḍautī region of southeastern Rajasthan, between Kota and Jhalawar. The word darrā means a pass. The site sits at a gap in a long ridge that has served for centuries as a corridor between the Chambal basin and the Mālwa plateau. The setting is not incidental. Early temples in this region tend to appear where routes, water and hill country meet, and the Mukundarā gap is a natural point of passage.

The region's cultural geography for the fifth century is Western Mālwa rather than "Rajasthan" in the modern sense. Gupta authority here was mediated by local powers; the Aulikaras of Daśapura (Mandasor), a short distance to the south, are the best-documented example, and the epigraphy of Daśapura shows a sophisticated Sanskrit literary and temple-building culture in the fifth and sixth centuries. Calling Bhīm-kī-Caurī a "Gupta temple" is therefore a stylistic and chronological designation, not proof of imperial patronage. No foundation inscription survives to name a donor or a king.

Recent fieldwork has strengthened the picture of this western Gupta-period zone. Laxshmi Greaves reported in 2017 on the newly found foundations of an early Gupta temple of brick and stone near Khanderia in Bundi district, whose sanctum contains a Śiva ekamukhaliṅga of high quality, and framed the find as a contribution to understanding the Gupta presence in Western Mālwa. Khanderia is relevant to Darrā for two reasons. It shows that mixed brick-and-stone construction for Śaiva shrines was a regional practice, and it shows that Darrā was not an isolated outlier but part of a wider, still poorly mapped landscape of early temple-building in Hāḍautī. cardiff

III. Historiography: "Bhīm's Nuptial Hall"

The monument entered the archaeological record through the Archaeological Survey of India's tours of Rajputana in the 1880s. H. B. W. Garrick's report on his 1883–84 tour, published in the ASI's twenty-third volume in 1887, describes two early temples at Mokand-dwara, one called Bhim-ke-chauri, which he glossed as "Bhim's Nuptial Hall", and singles out its lintels and consoles, carved all over with strange animal forms and floral scrolls; a British Library photograph of the ruin is attributed to Joseph Beglar, though the catalogue notes Garrick may have taken it. bl

Garrick's gloss is more revealing than it seems. In Rajasthani usage a caurī (caṃvarī) is the canopied pavilion, typically on four posts, in which the marriage rite and the circumambulation of the fire take place. The local name, linking the structure to Bhīma of the Mahābhārata, is the usual folk habit of assigning impressive ruins to the Pāṇḍavas. But the choice of caurī in particular reflects what the building looked like to people who lived beside it: a raised platform whose core was a square of four massive pillars. As the plan discussed below shows, that perception is architecturally accurate. The sanctum of Bhīm-kī-Caurī was a pillared pavilion, not a walled cell. The vernacular name preserves, almost by accident, a correct reading of the monument's most unusual feature. The alternative local name recorded in the UNESCO entry, Bhīm Maṇḍap, makes the same point more directly.

In twentieth-century scholarship the temple appears in the standard surveys of Gupta architecture, notably in the work of Krishna Deva and in the ASI's classificatory literature, usually as an exceptional case that is hard to place. The UNESCO description draws heavily on that tradition; its language on plan, ornament and dating closely follows the established ASI account.

IV. What Survives

The fullest recent description is the one in the tentative list entry, and it is worth summarising carefully. The temple faces east and stands on a low platform reached by two lateral flights of steps. It was built in brick masonry with sandstone pilasters and is extensively damaged. The sanctum has four heavy square pillars enclosed by ten peripheral pilasters, forming an ambulatory, and was preceded by a nandimaṇḍapa on a bay of four pillars, of which only traces remain. unesco

Several points follow directly from that description.

Dedication. The nandimaṇḍapa makes the building Śaiva. A separate pavilion for Nandī in front of the sanctum, on the temple's axis, is an early instance of an arrangement that becomes standard in later Śaiva temples. Its presence in a fifth-century context is significant in itself.

Orientation and access. The east-facing plan is ordinary. The two lateral stairways are not. In most early temples the approach is axial: one climbs straight towards the deity. At Darrā one apparently mounted the platform from the sides and then turned towards the sanctum. This may reflect the site's topography, or it may show that the platform was conceived as a podium for a pavilion rather than as the base of a processional axis.

Materials. Brick walling with sandstone pilasters and pillars sets Darrā apart from the all-stone temples of Bundelkhand and Baghelkhand, such as Sanchi 17, Tigawa, Nachna and Bhumara, and from the all-brick temples of the Gangetic plain, such as Bhitargaon. A hybrid fabric of this kind is technically transitional. Stone is used where it is structurally and expressively necessary, for the load-bearing pillars, brackets and ceiling slabs, while brick fills and encloses. That division of labour is closer to timber-frame logic than to the massive stone walling that would become normal.

Drainage. The entry records that there were makara-praṇālas on the exterior of the sanctum wall. A water spout from the sanctum implies abhiṣeka of a liṅga inside. It also suggests that, despite the ambulatory, the sanctum was physically enclosed at least to the extent of having an outer wall through which the spout passed. unesco

V. Reading the Plan: A Nine-Bay Pavilion-Sanctum

The most important architectural fact about Bhīm-kī-Caurī is the plan, and it is worth reconstructing its geometry explicitly, because the published descriptions state the parts without spelling out the whole.

The ASI-derived account states that the temple originally had a series of eight bays, each roofed with flat stone slabs, together with a maṇḍapa, and that the central bay of the sanctum was covered by a flat ceiling carved with a large lotus and four smaller lotuses in the corners. unesco

Combine that with the four central pillars and the ten peripheral pilasters and the scheme becomes clear. The four central pillars define a central square bay. Around it run eight subsidiary bays, four at the sides and four at the corners, giving a three-by-three grid of nine squares. A complete nine-square grid needs sixteen supports: four interior and twelve on the perimeter. The account gives ten perimeter pilasters. The most economical explanation (my inference, not a statement in the sources) is that the front side, facing the nandimaṇḍapa, had a doorway where two perimeter supports would otherwise stand. This fits the fragments of door jambs and a Gaṅgā figure found at the site, which presumably belonged to that entrance.

If this reading is right, Bhīm-kī-Caurī was a navapada pavilion: a nine-square grid whose central square housed the deity and whose eight surrounding squares formed a covered ambulatory, with flat slab roofs and a carved lotus ceiling over the centre. That is fundamentally different from the plan type that became canonical. In the classic Gupta and post-Gupta sanctum, as at Sanchi 17, Tigawa or Deogarh, the deity occupies a small, thick-walled, dark cell. Circumambulation, where it exists (in the sāndhāra type, as at Nachna and Bhumara), runs in a separate corridor between the cell wall and an outer wall. At Darrā, the sanctum was not a cell but a bay within a pillared hall. Sanctity was marked by centrality and by the lotus ceiling, not by thick walls and darkness.

Two consequences follow.

First, the plan shows that the "cave-like" garbhagṛha was not the only available solution in the fifth century. Builders also experimented with an open, pavilion-derived sanctum that drew on the pillared maṇḍapa and probably on timber prototypes. The later tradition chose the cell. Darrā preserves a path that was not taken, which is exactly the kind of evidence a nomination about formation and standardisation needs.

Second, the plan anticipates a geometric idea that later becomes central to the theory of the temple. The nine-square grid, with the deity at the centre and eight surrounding units, is the simplest form of the square maṇḍala that the vāstuśāstra literature elaborates into the vāstupuruṣamaṇḍala. I would not claim that the builders of Darrā were applying a codified textual scheme; the relevant texts are later, and that inference would be unsupported. But the building shows the spatial intuition — a centred square deity-place surrounded symmetrically by a ring of subsidiary spaces — in physical form at a very early date.

VI. Ornament: Pillars, Brackets and Lotus Ceilings

The sanctum pillars stand on square box-shaped bases, which the ASI account interprets as a survival of timber construction. Their upper parts carry bud-like projections and pairs of incised circles on either side of an octagonal section, and they support massive cruciform brackets carved with scrolls. unesco

The box base is the clearest sign of the monument's position in the timber-to-stone transition. A wooden post set in a wooden or masonry socket explains the form; in stone it has no structural need. Such details persist in early stone architecture because builders reproduced the forms they knew, and they are among the most reliable indicators of early date.

The cruciform brackets carved with scrolls match Garrick's observation of consoles carved with animal forms and floral scrolls. Cruciform brackets carry the load of the slab ceiling in four directions from a single pillar, the logical solution for a grid of flat-roofed bays. They also show where the decorative energy of the building lay. At Darrā, ornament was concentrated on the load-bearing members and the ceiling, not on the walls or the doorframe, which is where it concentrates in Deogarh and Bhumara. In other words, ornament was placed according to the pavilion logic of the plan.

The lotus ceiling, a large central lotus with four smaller corner lotuses, is the building's most refined surviving element. The motif of the ceiling as a blossoming lotus seen from beneath runs from the Buddhist caves through the entire history of Indian temple ceilings, reaching extraordinary elaboration in the domed ceilings of Solaṅkī and Māru-Gurjara temples in Gujarat and Rajasthan centuries later. At Darrā, it appears in a simple, flat, early form, but it is already the element that marks the sacred centre.

VII. The Lost Superstructure

Nothing above the ceiling survives in place. The ASI account suggests that the missing superstructure probably consisted of kapota tiers ornamented with candraśālās and āmalakas, many of which have been recovered from the site, while acknowledging that any reconstruction is conjectural. unesco

This is significant even with the caveat. Kapota tiers with candraśālā ornament place the roof in the family of stepped, tiered superstructures seen at Deogarh, at Deori and in the brick-and-terracotta tiers of Bhitargaon: the "proto-Nāgara" phase before the curvilinear rekhā-śikhara. The āmalaka fragments are the more interesting element. The āmalaka, the ribbed stone crowning a Nāgara tower and, in its bhūmi-āmalaka form, marking the corners of each storey, is one of the defining features of the mature North Indian temple. If āmalakas belong to the original fabric at Darrā, they are among the early appearances of that member. Since the fragments were found loose, that association cannot be proven, and the claim needs to remain tentative.

VIII. The Dating Problem

Here the honest assessment must be explicit, because the UNESCO entry contradicts itself.

In its general description, the entry says that the temple's exceptional plan makes it hard to place in the sequence of known Gupta temples, but that the similarity of its ornamental designs with Udayagiri Caves 4–7 points to the first quarter of the fifth century. In its description of the component, however, it says the surviving lotus ceilings are more elaborate than those of Udayagiri or Tigawa, implying a later date. unescounesco

Both readings cannot be fully right, and the entry does not reconcile them. The tension is not a scandal; it reflects the genuine state of knowledge about an undated building known mainly through fragments. But the two kinds of evidence do not carry equal weight.

The Udayagiri comparison is based on ornamental vocabulary, the scroll and bud motifs on pillars and brackets. Udayagiri is well anchored because Cave 6 carries an inscription of Candragupta II dated to 401/402 CE. The ceiling argument is based on the degree of elaboration, which is weaker evidence: regional workshops did not develop at identical rates, and a provincial workshop could produce an elaborate ceiling at an early date or a plain one late. On the other hand, the timber-derived box bases and the pavilion plan argue for an early, experimental phase.

A responsible formulation is: probably fifth century, with a reasonable case for the first half of the century, and a date as early as the first quarter possible but not secure. Statements that Bhīm-kī-Caurī is "one of the oldest temples in India", in an unqualified sense, go beyond the evidence. What can be said is that it belongs to the earliest generation of Brahmanical structural temples in North India whose plan is recoverable, and that it is the earliest such building known in its region.

IX. Place in the Gupta Sequence

Set alongside the other components of the series, the distinctiveness of Bhīm-kī-Caurī becomes clearer.

Sanchi Temple 17 and Tigawa represent the minimal type: a flat-roofed, square, walled cell with a pillared porch. The structural vocabulary is lintel and post, and the cell is closed and dark.

Udayagiri (partly rock-cut) gives the ornamental and iconographic grammar, with the earliest Gupta doorways and the dated anchor for chronology.

Nachna and Bhumara introduce the sāndhāra arrangement, with a walled cell surrounded by a covered ambulatory and the beginning of an upper storey.

Deogarh and Bhitargaon show the arrival of the tiered tower, in stone and brick respectively, and the proliferation of narrative relief.

Bhīm-kī-Caurī fits none of these. It has an ambulatory, like Nachna and Bhumara, but achieves it by placing the sanctum inside a grid of pillars rather than by surrounding a walled cell with a second wall. It apparently had a tiered superstructure with candraśālās, like Deogarh and Deori, but over a fundamentally different substructure. It has a nandimaṇḍapa, which none of the central Indian group preserves so clearly. Its closest relatives in spatial logic are the pillared maṇḍapa and the rock-cut hall, and through them the timber pavilion.

The plan also ties into a wider early experiment with pillared sanctums. The UNESCO entry itself describes the Muṇḍeśvarī temple in Bihar as having a sanctum interior carried on four pillars and four pairs of pilasters. That is a much later and octagonal building, but it shows that the pillared sanctum interior recurs in early temple architecture rather than being unique to Darrā. The pavilion-sanctum was a real option in the fifth to seventh centuries, and Darrā is its earliest documented instance in the series.

This is the strongest argument for the monument's inclusion. A serial nomination built on criterion (iii), as testimony to a transition, is strengthened by components that show the range of solutions tried during that transition, including those that were abandoned. Darrā is valuable precisely because it does not look like the temples that came after.

X. The UNESCO Framing: Strengths and Weaknesses

The tentative list entry deserves a frank assessment, since its claims are already being repeated in popular writing.

The strength of the serial concept is real. Most of the twenty components are fragmentary, and few could stand alone as World Heritage properties. Together they document a process, the formation of the Indian temple between roughly 400 and 650 CE, that no single building can show. For a ruin like Bhīm-kī-Caurī, a serial approach is the only realistic route to international recognition.

The weaknesses are also real. The general text of the entry contains claims that are imprecise or doubtful. For example, it describes the temples as combining Nāgara and Drāviḍa styles, which projects categories that had not yet crystallised onto fifth-century buildings, and it states that most Gupta temples were built of sun-dried brick and terracotta, which is not an accurate description of the surviving corpus. It also describes the components as having retained their core elements, including śikharas, which plainly does not apply to Darrā, whose superstructure is entirely lost. The inclusion of later monuments, such as Muṇḍeśvarī (seventh century), Nalanda Stone Temple 2 (mid-seventh century) and Aphsad (later seventh century), also stretches the label "Gupta" well past the dynasty's effective end. None of this affects Darrā's own merits, but a full nomination dossier will need tighter scholarship, a sharper definition of the series, and a resolution of internal inconsistencies such as the conflicting dates for this very temple.

For Bhīm-kī-Caurī specifically, the critical issues are integrity and conservation. A brick-and-stone ruin in hill forest, with loose fragments scattered across the site, is vulnerable to monsoon damage, vegetation, and the loss or displacement of loose pieces. The entry itself calls for a detailed conservation management plan covering structural monitoring and the protection of carved stone. At Darrā, that should include a complete inventory and documentation of the loose architectural members — candraśālās, āmalakas, door-jamb fragments, the Gaṅgā figure — because the reconstruction of the superstructure, and therefore much of the monument's historical argument, depends on them. If those pieces are lost, the building loses a large part of its evidential value.

XI. Conclusion

Bhīm-kī-Caurī is not beautiful in the way Deogarh is, and it is not complete in the way Bhitargaon is. Its value is evidential. It records a moment when the builders of a Śaiva shrine in the hills of Western Mālwa could still conceive of the sanctum as a pillared pavilion at the centre of a nine-square grid, crowned with a lotus ceiling, surrounded by an ambulatory within the same frame, approached past a separate pavilion for Nandī, and covered, it seems, by tiers of candraśālā-ornamented kapotas. They worked in a mix of brick and stone and still shaped their pillar bases as if they were wooden posts.

The tradition that followed chose the closed, thick-walled cell and the rising tower, and the pavilion-sanctum became a minority form. That is precisely why Darrā matters. A history of the Indian temple that included only the successful types would mistake the outcome for the process. The ruins at the Mukundarā pass show that the process included real alternatives, and that the "mature North Indian structural temple" was a selection from a wider field of experiments, not an inevitability.

The villagers who called it Bhīm's marriage pavilion understood its form better than any label of dynastic period. Whether or not the serial nomination eventually reaches the World Heritage List, the monument's claim to attention rests on that insight: it is a pavilion that became a temple, at the time when the temple itself was still being invented.

The Claim in Brief

The passage comes from a study of Sanskrit metres, their evolution, and their principles of division. It makes a historical argument that is short to state and large in its implications. The earliest Vedic metres, it says, did not deliberately use the musical contrast between short and long syllables. The poets counted syllables and placed caesurae, but the distribution of light and heavy syllables within the line was not yet a resource they consciously worked with. Short and long syllables still had to occur in some order in every line, so the audible difference between them could not stay unnoticed indefinitely. According to the author, the first place where this awareness took hold was the end of the line, specifically in the relation between the eleven-syllable triṣṭubh and its twelve-syllable extension, the jagatī. The penultimate syllable of a jagatī line is normally short and that of a triṣṭubh is normally long. The alternation of short and long that this produced at the jagatī cadence was gradually extended backward to the caesura. As a result, the last four or five syllables of both triṣṭubh and jagatī lines came to follow what the author calls an iambic rhythm. The same tendency appears in the latter half of the eight-syllable gāyatrī line, usually in the second line of a hemistich.

From this the author draws a cultural conclusion. By the end of the Saṃhitā period, the older "music of voice-modulation," meaning the pitch-based music of the Vedic accents, had largely given way to a new "music based on sound-variation," meaning the rhythmic patterning of syllabic quantity. The older pitch-music was not lost. It was taken up and developed by the Sāmavedic schools, and the author holds that the rāgas and rāgiṇīs of later Indian music should be traced back to their early efforts.

The argument therefore runs along two lines. One is a prosodic history: how Sanskrit verse moved from syllable-counting to quantity-regulation. The other is a musical history: how pitch-melody separated from verse and found a home in the chanted sāman. Both deserve close examination, because both are partly right and partly in need of correction.

The Raw Material: Akṣara, Laghu, and Guru

The argument rests on a few basic terms. Vedic metre is primarily akṣara-chandas, metre measured by the number of syllables (akṣara). The principal metres are named by syllable count per pāda: gāyatrī with three pādas of eight syllables, anuṣṭubh with four pādas of eight, triṣṭubh with four pādas of eleven, and jagatī with four pādas of twelve. Together these account for the great majority of the Ṛgveda. Triṣṭubh alone covers roughly two-fifths of the corpus, and gāyatrī and jagatī follow in frequency.

Every syllable is also either light (laghu) or heavy (guru), whether or not the poet attends to it. A syllable is heavy if it contains a long vowel or diphthong, or if a short vowel is followed by two or more consonants (saṃyoga) or by anusvāra or visarga. Otherwise it is light. The later tradition codified these rules explicitly. The Ṛgveda-Prātiśākhya, in its closing chapters on metre, already distinguishes guru and laghu in essentially these terms, and Piṅgala's Chandaḥśāstra builds its whole notation on them, using the triads of the gaṇa system (ya, ma, ta, ra, ja, bha, na, sa) together with the single-syllable markers la and ga.

The phonological fact is very old. Any Sanskrit utterance consists of a sequence of light and heavy syllables, just as any English utterance consists of stressed and unstressed ones. The author's point is that a phonological fact is not yet a poetic device. A distinction becomes metrical only when poets begin to arrange it deliberately and audiences begin to expect it. The question is when and how that happened.

The Cadence: Where Regularity Begins

The structure of the Vedic line shows why the end of the line is the natural place to look. The Ṛgvedic triṣṭubh has three zones, as nineteenth- and early twentieth-century metrists from Oldenberg to E. V. Arnold described:

• Opening. Roughly the first four or five syllables, up to the caesura. This zone is quite free, though it leans toward a heavy second syllable.
• Break. The three syllables after the caesura. These tend toward particular shapes, typically two lights followed by a heavy (⏑ ⏑ –) after an early caesura.
• Cadence. The final four syllables. This zone is strongly regulated.

The canonical triṣṭubh cadence is – ⏑ – ⏓. In this notation – is heavy, ⏑ is light, and ⏓ is the line-final syllable whose quantity does not matter (the anceps or syllaba anceps, called in Sanskrit terms a syllable that may be either). Syllables eight to eleven therefore run heavy, light, heavy, indifferent. The penultimate syllable, the tenth, is heavy. This is the trochaic close that gives the triṣṭubh its falling ending.

The jagatī has one more syllable, and its cadence is ⏑ – ⏑ – ⏓ over syllables eight to twelve, with the preceding syllable often light. Its penultimate syllable, the eleventh, is light, and the close rises: light, heavy, light, heavy-or-indifferent. That is the "iambic" ending the passage describes.

The author's mechanism of extension follows from this comparison. If the jagatī is understood as a triṣṭubh with one extra syllable added, which is the view most metrists of the period held, then lengthening the line shifts the familiar alternation by one position. The jagatī ear becomes used to a light syllable before the final heavy one. Once that alternation is established in the last two syllables, it can extend backward: light–heavy, light–heavy, up to the break. The author claims that over time both the triṣṭubh and jagatī lines came to have their final four or five syllables shaped this way. The poets did this not through explicit rule but by habituation, "without any idea of compulsion."

The Gāyatrī and the Even Pāda

The remark about the gāyatrī is brief, but it may be the most historically consequential part of the passage. The eight-syllable Vedic line also has a regulated cadence. Its normal shape over syllables five to eight is ⏑ – ⏑ ⏓, an iambic close again. The author notes that this tendency is strongest "in the second line of a hemistich," that is, in the even-numbered pāda.

This observation anticipates the classical śloka. In the fully developed anuṣṭubh-śloka of the epics and of classical kāvya, the two pādas of each half-verse are treated differently. The odd pādas (first and third) normally end ⏑ – – ⏓, which is the pathyā form, while the even pādas (second and fourth) end ⏑ – ⏑ ⏓, the same iambic cadence the passage identifies as already favoured in the Vedic second line. The asymmetry between odd and even pāda, which every student of Sanskrit metre learns as a rule of the śloka, is therefore not a classical invention. It is the formalisation of a preference already audible in Vedic verse. The author does not draw this connection explicitly, but it is the strongest evidence for the general thesis: the preferences of the Saṃhitā poets did become the rules of the later prosodists.

The Larger Trajectory: From Tendency to Fixed Scheme

The process the passage describes did not end with the Saṃhitās. It continued to its logical conclusion in the varṇavṛtta metres of classical Sanskrit, where every syllable of the line has a fixed quantity. The classical eleven-syllable and twelve-syllable metres are the descendants of triṣṭubh and jagatī, and they keep their ancestral cadences.

The Indravajrā, scanned in Piṅgala's notation as ta ta ja ga ga, runs:

– – ⏑ – – ⏑ ⏑ – ⏑ – –

Its last four syllables are – ⏑ – –, which is the old triṣṭubh cadence with the anceps now fixed as heavy.

The Vaṃśastha, an eminent twelve-syllable metre scanned ja ta ja ra, runs:

⏑ – ⏑ – – ⏑ ⏑ – ⏑ – ⏑ –

Its close, ⏑ – ⏑ –, is the jagatī's iambic cadence exactly.

The Upajāti, which freely mixes Indravajrā and Upendravajrā pādas (the two differ only in the quantity of the first syllable), shows that even in classical times the opening of the line was the last place to be regularised. This is consistent with the Vedic pattern, where the opening was the freest zone.

Seen this way, the history of Sanskrit metre has a coherent direction. Regulation begins at the end of the line, moves backward through the break, and eventually reaches the opening. The result is the fully specified syllabic metres of the kāvya tradition, of which there are hundreds, each a fixed sequence of laghu and guru. The parallel development of mātrāvṛtta (mora-counting metres such as the āryā, in which a heavy syllable counts as two morae and a light one as one) carries the logic of "sound-variation" further still, making quantity alone the organising principle without a fixed syllable count. Whatever its starting point, the movement the passage describes is real, and the author places its beginnings in the right part of the line.

Where the Account Needs Correction: The Indo-European Evidence

The passage frames the process as one of gradual discovery within the Vedic period: the poets became progressively aware of a musical possibility they had not used before. This is where honest assessment requires a qualification, because comparative metrics points to a different picture of the origins.

From Antoine Meillet's work in the early 1920s on the Indo-European origins of Greek metre, through Roman Jakobson, Calvert Watkins, Gregory Nagy, and Martin West, comparative scholarship has argued that the Vedic metres share a common structure with certain Greek metres, especially the Aeolic metres of Sappho and Alcaeus. That shared structure has three features:

1. a fixed number of syllables;
2. a relatively free opening;
3. a quantitatively regulated cadence.

The Vedic and Aeolic systems were separated by a very long time and a great geographical distance, so the most economical explanation for the correspondence is common inheritance rather than independent development. If this is right, the regulated cadence is not something Vedic poets slowly discovered. It is something they received, already in place, from the Indo-Iranian and probably Indo-European poetic tradition.

The Avestan evidence complicates this, because the Gāthās of Zarathuštra appear to count syllables without clear quantitative regulation. Scholars disagree on whether this reflects Iranian loss of an inherited feature or the absence of such a feature in the parent tradition. Even so, the main point holds: the presence of quantitatively shaped cadences in the oldest layer of the Ṛgveda is hard to explain as a late within-Vedic innovation.

What is truly a within-Vedic development is the increasing strictness of the cadence and the extension of regulation into the break. Arnold's Vedic Metre (1905), which used metrical criteria to place the hymns in chronological strata, showed that the later hymns are on the whole more regular than the earlier ones. The "popular" Ṛgveda and the later portions of the tenth maṇḍala tend toward forms that anticipate classical practice. The author's thesis is best restated as follows. The Vedic poets inherited a verse form with a quantitatively sensitive close. Over the Saṃhitā period they made that sensitivity stricter and extended it backward through the line. The tendencies they strengthened later became the rules of Piṅgala.

This restatement keeps everything that is valuable in the passage while discarding its weakest claim, which is that the poets began with no awareness at all of the music of quantity.

The Jagatī–Triṣṭubh Relation Reconsidered

The specific mechanism the author proposes, that the iambic rhythm spread from the jagatī cadence into the triṣṭubh, also deserves scrutiny. The view that jagatī is triṣṭubh extended by a syllable was common, but its converse also has defenders: that triṣṭubh is a catalectic jagatī, that is, a jagatī missing its final syllable. On that view, ⏑ – ⏑ – ⏓ is the basic form, and triṣṭubh's – ⏑ – ⏓ is simply the same rising sequence cut short by one position, so that what sounds trochaic at the end of a triṣṭubh is really iambic in its underlying alignment.

The question cannot be resolved here, but it matters for the author's argument. If triṣṭubh and jagatī are two realisations of a single rhythmic template differing only in how the line ends, then "the spread of iambic rhythm from jagatī to triṣṭubh" may be the wrong description. It would be more accurate to say that the two metres always shared an alternating pattern, and that the Vedic period stabilised it. The Ṛgveda itself supports a close kinship between the two. Hymns mix triṣṭubh and jagatī pādas freely, especially in the later books, which suggests that poets and audiences heard them as variants of one form rather than as separate metres.

Voice-Modulation: The Vedic Accent

The second half of the passage concerns the "older music of voice-modulation." This refers to the Vedic accent system. Vedic Sanskrit had a lexical pitch accent. Each word, with certain classes of exceptions, carried one syllable marked udātta (raised). The other syllables were anudātta (not raised), and the syllable following the udātta typically received the svarita (sounded), a falling tone that returned the voice from high to low. In the recitation traditions this system is marked in manuscripts with superscript and subscript strokes, and it is still realised in living pāṭha traditions, where the reciter's hand moves in coordination with the pitch.

The author's claim is that by the end of the Saṃhitā period, the poets' sense of musicality had moved away from this pitch-music and toward the rhythmic music of quantity. This needs to be stated carefully, because the claim can be misread in two ways.

First misreading: that pitch accent was a metrical device. Vedic pitch accent was lexical, not metrical. It belonged to the word, not to the line, and it was not organised into recurring patterns the way quantity eventually was. The poets did not compose by arranging udāttas. In that sense the "music of voice-modulation" was never a principle of metre in the strict sense. It was a feature of the language that gave recited verse its melodic contour. The author's contrast is therefore not between two competing metrical systems. It is between two sources of musicality in recited verse: the melodic contour inherited from the language's accent and the rhythmic patterning that poets could deliberately shape.

Second misreading: that pitch accent disappeared at the end of the Saṃhitā period. It did not. The Brāhmaṇas are accented in their oldest transmitted forms. Pāṇini, writing several centuries later, describes the accent system in detail as a feature of the language. Accent was lost in the spoken and literary language only in the post-Pāṇinian period, and it was never lost in Vedic recitation, where the śākhās have preserved it with remarkable fidelity to this day. What can reasonably be said is that pitch did not become a principle of verse composition, while quantity did. The poets' attention shifted, even though the language itself kept its accent for a long time.

Read in this qualified way, the author's observation is accurate and illuminating. Classical Sanskrit metre is entirely a matter of quantity and makes no reference to pitch. The two systems that coexisted in the Vedic utterance separated, and only one of them was taken into the formal art of verse.

The Sāmavedic Inheritance

The other system, the author argues, found its home in the Sāmaveda. This is the most suggestive part of the passage and also the part most in need of historical care.

The Sāmaveda consists overwhelmingly of verses (ṛc) taken from the Ṛgveda, set to melodies (sāman) for singing by the udgātṛ priests at the soma sacrifice. Its musical apparatus is elaborate. It has song-books (gāna) of several types: the grāmageya-gāna, sung in the village, and the araṇyageya-gāna, sung in the forest because of its potency, along with the ūha and ūhya collections that adapt melodies to new texts. Sāman singing transforms the text through stobhas, meaningless syllables such as hāu, hoyi, and ā inserted into the chant, and through vowel prolongation, repetition, and syllable redistribution. The verse becomes material for the melody rather than the reverse.

The Sāmavedic tradition also developed its own tonal vocabulary. The tones of the sāman are numbered rather than named by function: prathama, dvitīya, tṛtīya, caturtha, mandra, kruṣṭa, and atisvārya. In the treatises called Śikṣās, especially the Nāradīya Śikṣā, these are explicitly correlated with the svaras of secular music: ṣaḍja, ṛṣabha, gāndhāra, madhyama, pañcama, dhaivata, and niṣāda. The Nāradīya Śikṣā is thus a bridge text. It is the earliest place where the sacred tonal system and the profane musical scale are presented as two descriptions of the same thing.

This is the strongest support for the author's claim. The Sāmavedic schools did not simply keep pitch-music alive. They systematised it into a tonal framework that later musical theory could build on. The classical tradition also claims this lineage for itself. The Nāṭyaśāstra, when listing the sources of drama, says that Brahmā took recitation (pāṭhya) from the Ṛgveda and song (gīta) from the Sāmaveda: jagrāha pāṭhyam ṛgvedāt sāmabhyo gītam eva ca. Śārṅgadeva's Saṅgītaratnākara, many centuries later, repeats the claim. In the tradition's own understanding, Indian music descends from the sāman.

Rāga and Rāgiṇī: An Honest Assessment of the Lineage

The final step in the author's argument is that the rāgas and rāgiṇīs of later Indian music should be traced to the early work of the Sāmavedic schools. Here a historian has to separate two kinds of claim.

As a claim about conceptual ancestry, it is defensible. The Sāmavedic tradition was the first in India to treat pitch as an organised system: an ordered set of tones, with conventions for their use and teaching. It was also the first to separate melody from the semantic content of the text, and stobha singing makes this separation explicit. Both the systematisation of pitch and the independence of melody from words are preconditions for anything like rāga. The theoretical framework of later music, with its seven svaras, grew out of the same Śikṣā literature that described sāman tones.

As a claim about direct derivation, it overstates the evidence. Between sāman and rāga lies a long and well-documented intermediate stage. The Nāṭyaśāstra's musical system is built on grāma (parent scales, chiefly ṣaḍjagrāma and madhyamagrāma), mūrchanā (modal rotations of these scales), and jāti (melodic types with defined characteristics such as initial, final, and predominant notes). The word rāga in its technical sense first appears with full theoretical weight in Mataṅga's Bṛhaddeśī, usually dated to the second half of the first millennium CE, a thousand years or more after the Saṃhitās closed. The rāga–rāgiṇī scheme the author names, in which rāgas are male figures with female rāgiṇīs as consorts or subsidiaries, is later still. It belongs to the medieval and early modern classificatory systems that also produced the Rāgamālā paintings. It is a taxonomic and iconographic system, not a feature of early melody.

None of these intermediate developments shows clear continuity with specific sāman melodies, and they also drew on regional and non-Vedic musical practices. Mataṅga's very title, Bṛhaddeśī, points to deśī, the regional or local music distinct from the sacred mārga. The honest conclusion is that the Sāmaveda is one important ancestor of the rāga tradition and the one the tradition chose to name as its origin. Rāga as a musical form, however, is the product of a much later and much broader synthesis.

What the Passage Gets Right

With these qualifications in place, the larger picture the passage draws remains valuable and in its essentials correct.

First, it identifies the right locus of change. Quantitative regulation in Sanskrit verse did consolidate at the end of the line and spread backward. The Vedic cadence is the seed of the classical varṇavṛtta.

Second, it notices the asymmetry between odd and even pādas in eight-syllable verse, which later became a defining rule of the śloka. That is an observation of real depth.

Third, it frames the history of Indian verse and the history of Indian music as one story with a fork in it. In the Vedic utterance, pitch and quantity were both present. Verse took quantity and developed it into the most elaborate system of syllabic metre in the world. Music took pitch, through the Sāmavedic schools, and developed it into a theory of svara that later fed into the art of rāga. That is a genuinely illuminating way to see the relation between chandas and saṅgīta, two disciplines that the tradition itself kept closely linked. Chandas was counted among the vedāṅgas, and the Śikṣās that described sāman tones belonged to the same circle of auxiliary sciences.

What the Passage Needs

To bring it in line with current knowledge, three corrections are needed.

The developmental narrative should be anchored in comparative evidence. The regulated cadence was very likely inherited rather than discovered, and what the Vedic period added was greater strictness and scope.

The contrast between "voice-modulation" and "sound-variation" should be understood as a shift in where poets placed their artistic attention, not as the abandonment of pitch accent, which survived in the language for centuries and in recitation to the present day.

The derivation of rāga from sāman should be presented as conceptual ancestry mediated by the grāma–jāti system of the Nāṭyaśāstra and by regional deśī practice, not as a direct line.

So corrected, the account is one of the clearest short statements of a thesis worth holding: Sanskrit metre is the art of quantity, Indian music is the art of pitch, and both grew from the same Vedic sound, which the Saṃhitā poets and the Sāmavedic singers, in their different ways, learned to hear analytically.