INTRODU10CTION I. C 0 N T E, N T S Introductory- Manuscript material- Relationship of the manuscripts- Authorship of the Siddld1ta-darp00 and the Commentary- Contents of Siddhanta-darpur10 The Appendices- The Commentary- Nilakantha, the author- Personal details- Birth-place and Family Satkara, the brother, and Netranārāyana, the patron Ravi and Damodara, the teachers- Works of Nilakapha - Chronology of Nilakantha's works- versatility of Nilakantha- Acknowledgements उपदेशभाग: (Theory Section) मङ्गलाचरणम् (Invocation) ग्रहपर्ययाः (Revolutions of the Planets) मन्दोच्चपर्ययाः शीघ्रोच्चपर्ययाश्च (Revolutions of the Higher apses and the Ascending modes) परमविक्षेपकलाः (Maximum latitudes) मन्दपरिधय: शीघ्रपरिधयश्च (Epicycles of the Apses and of Conjunction) युगमानम् (Measure of the aeons) भगणांशाः (Segments of a revolution) ग्रहयोजनभुक (Linear-welocity of planets in yojana-S) भूमीन्दुरविव्यासाः (Diameters of the Earth, Moon and Sum) अवन्तीस्थानम् (Position of the city of Avant1) नक्षत्रपरिधिः (The Orbit of the Stars) ... अपक्रमवृत्तस्थितिः (The position of the Ecliptic) 11 11 12
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