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xviii PREFACE. great Jagadica of Navadvipa is, however, to be distinguished from another Jagadica known as Jagadica Pancanana, the commentator of the Bhagavatgita, No. 257, of Anandalahari, No. 29, and of Mahimnastava, No. 281. Sabdacaktiprakacikatippani, No. 352, is a commentary on one of Jagadica's most important and widely-known original works on the application of Logic to Grammar by Krsnakanta Vidyavagica, the son of Kalicarana Nyayalankara of Navadvipa, who flourished during the latter end of the last century, and wrote commentaries on Nyaya, Smrti with equal facility, and composed a few poems of merit. A commentary, No. 230, on the first chapter of Didhiti, was written by Krsnadasa Sarvabhauma, who does not seem to have been an inhabitant of Navadvipa, though belonging to the Navadvipa School. A MS. of this work, dated Caka 1576, has been examined at Bhatpada. Kanada was a contemporary and a fellow-student of Raghunatha Ciromani, the founder of the Navadvipa School. They were both students of Vasudeva Sarvabhauma, who for the first time taught Nyaya Philosophy at Nadiya, at the commencement of the fifteenth century. Vasudeva was a student of Mithila, but was not very loyal to his alma-mater. Kanada was one of the first batch of his students. Kanada went to Mithila to complete his education, but came back, impressed with the idea that if a scholar of superior merit goes to Mithila, he can rise superior to the Pundits of that country. Acting under this impression, he induced Raghunatha, belonging to the next batch of his Professor's pupils, to visit Mithila. Raghunatha defeated the best of the Maithila Pundits in argument and renounced the allegiance of Mithila and started a new school. It was not known if Kanada wrote any work on Nyaya. Number 14 of the present volume is a work by him. It deals with the various terms of syllogism. Indian philosophers are unanimous in making the mind a sixth organ of sense and an internal one as opposed to the