BHAVARTHA RATNAKARA is  treatise on astrology said to have been written by Sri Ramanujacharya and it deals with the subject in a masterly way. The translation, notes and examples, I have given in these pages, will speak for them-selves. Several books have been written by me on astrology -some of them compilations and some of them products -of my researches in the field of practical astrology. I have always felt that real astrological truths lay hidden in the Sanskrit language and the only way to bring them to the notice of the general public is to render them into English and explain the principles to-the best of nay humble ability and experience. My grandfather late Prof. B. Suryanarain Rao has done into English some of the most important works such as Brihat Jataka, Sarvartha Chintamani, Jaimini Sutras, etc., and his translations have been immensely liked by the educated public not only for the clarity with which difficult Sanskrit terms have been put into simple English but also for the vast practical experience he has brought to bear upon the inimitable, notes he has given. There are a number of books extant in Sanskrit on astrology and I pitched my attention on this particular book because I found that the several combinations mentioned in it  are not only useful and workable in actual practice but the entire subject of astrology has been dealt with systematically and yet  concisely. I had decided to bring out a translation of this book three years ago but I had to put off the decision as I wanted to test the various principles rather exhaustively  by applying them to practical horoscopes before    i  could bring them to the notice of the public.