Prithu Yasas, the author was born to illustrious Varaha Mihira, doyen of and authority on Hindu Astrology and an exponent of uncomparable and inimitable latitude.  After going through the present work, one can be convinced that Prithu Yasas justified his birth in an astrologer’s family. This work is among the Big Five in astrology, the other four being Parasara Hora, Brihat Jataka, Saravali and Jataka Parijata.  Horasara is rightly in the midst being the third in order of age.  A number of principle are found in this scientific work on predictive astrology.  Taking guidelines from Brihat Jataka, rules from the various Sages and earlier Acharyas relating to Rajayogas, Ashtak Varga, Female Horoscopy, Nashta Jataka, Yogas for poverty, for long life, for instant death, Dasa effects etc. are arranged in an understandable and clear manner.  The author discusses and opens new dimensions with the aid of Navamsas in  prognstications.  That celebrated Kalyana Varma of Saravali, Vaidyanatha of Jataka Parijata etc. followed the thinking of our author is a proof of the enviable place he occupies.  The author made humble efforts to bring an elementary student to the level of a scholar. Thus the present compendium, which is a Longue Haleine contains simple rules on most aspects of astrology.