For many years there has been a persistent demand for an up to date comprehensive text book of Astrology based on scientific treatment of the subject. This book is complete in itself, includes every aspects of Astrology does away with the necessity of purchasing any additional volume as textbook. The present work in the beginning emphasises on relation of Astrology to science and philosophy and thus establishes the validity of Astrology. There is added stress on the importance of aspects and values of Uranus, Neptune, and Pluto in modern times as new horizons has evolved in the fields of employment and social values. The work includes exhaustive chapters on longevity determination, scientific determination of bhavas, principles of judgment, yogas, Astro- medical diagnosis, Transits, Ashtaka Varga and elements of Jaimini system.  A number of example horoscopes confirm the validity of the principles especially in chapters on professions and diseases. The sanctity and intrinsic character of Hindu Astrology has been maintained throughout which makes the book equally indispensable for the beginners as well as scholars of Astrology.