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PREFACE.
in the short bibliographical review with which he ends each chapter of his work, mentions only the most important texts of the various philosophical schools.
The प्रमेयरत्नकोश is attributed to चन्द्रप्रभ, in the second of the opening verses and at the end of the text. This is the only explicit hint, but such that we may safely trust it. I cannot therefore accept the words of S. C. Vidyābhūshaņa ( Medioev. Logic, p. 46), “ He was the author.........possibly also of the two logical treatises called the Prameyaratna koca and Nyāyāvatāra-vivști.” Regarding the life of a Ta, the chief item is that given by ATT and quoted by Bhandarkar, Report 1883-84, p. 147. “In Râjasri's Karnaväraka there were four fellow-pupils, viz Chandraprabha, Munichandra, Mânadeva and Sânti. In Samvat 1149 Sridhara, & Jaina, wishing to set up at great expense an idol of Jinendra, asked Chandraprabha the elder to direct Munichandra the younger who was well known to all to take part in the religious ceremonies. Chandraprapbha being jealous said that a Sādhu could not take part in the proceedings; laymen only could do so. This ruling about Srâvakapratishthâ was disregarded and failed to draw any followers. So in Samvat 1159 Chandraprabha on one occasion said he had a vision of Pâdmâvatî the previous night and she had directed him to prove to his followers the truth of the srâvakapratishthâ and the Pûrạimâpâkshika ( the observation of the Pâkshika, literally, on the full moonday but actually on the last days of both the halves of a month ) and their existence from time immemorial. Thus arose the Paurnamîyapakshikas." We can therefore lay down with certainty the date as Samvat 1159 or 1102 A. D., so that we are entitled, without fear of mistake, to place the life of our author between the end of the 11th century and the beginning of the 12th. This is what we know for certain. He was born according to S. C. Vidyâbl.ūshana (p. 45) iu Guzerat Bhandarkar says (p. 148 ) that “Tilakâchârya the author of a Pratishthâkalpa was a follower of Chandraprabha's sect”, and that “the Pâkshikasaptati was written by Munichandra for the edification of Chandraprabha”. Professor Peterson, Report 1886-92 p. XXVII, adds that he was "pupil of Jayasimhasûri