INTRODUCTION xliii ver the erudite and extensive Vivarana of Govinda-svami and if his O later commentaries are any cue, this commentary, too, should have been extensive and highly informative. 10. Mahayatra-Vyakhya Another work of Suryadeva about which he makes a mention towards the end of his commentary on the Laghumanasa, s 2. commentary on the Mahayátrá of Varahamihira“ tato Varahamihirakrta Mahayatra sank sepato vyakhyata. Manuscripts of this work, too, are yet to be traced. Highly informed as Suryadeva was in ancient literature on natural astrology, his commentary on the Mahayatra should have contained substantial information and citations to earlier literature on the subject. 11. Khandakhadyaka-vyakhya Suryadeva states towards the end of his commentary on the Jatakapaddhati of Sripati that he intended to write a commentary on the Khandakhadyaka of Brahmagupta : Cf. idanim Bhatta-Brahmaguptakrta-Khandakhadyaka-vyācikīrșā vartate / tam ca Krşņo Deyakiputrah purayişyati. Possibly, this commentary has been written, but manuscripts thereof yet remain to be traced. 12. SURYADEVA'S METHOD OF EXPOSITION 1. Presentation of the background It is noteworthy that Suryadeva always sets out the background or the intent of a verse before he gives its exposition. In the case of important sections of the works, he prefixes his commentary with full-fledged 'Introductions' (upodghata-s) setting out the preliminary matter for a proper understanding of the respective sections. Such Introductions occur to the Gola-pada of the Aryabhatiya and sections relating to the Dhruva-sutras, Sphuta and Triprasna of the Laghumānasa.
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1. Mahayatra is called work has been edited by Studien, 10 (1868), 14 's-Gravenhage, 1913; b. Pingree, also Brhadyatra and Yaksasvamedhiya. The H. Kern, with German translation in Indische (1876), and in his Verspriede Geschriften, vol. I y Jagadish Lal, Lahore, 1944; and by David Govt. Or. Mss. Library, Madras, 1972,
