The book contains translations of six Astrological Treatises by the famous Arabian astrologer M sh >all h: The Book of Reception in Horary Questions. The earliest available Medieval treatise on Horary Astrology The Book of Nativities. An early treatise on Natal Astrology The Book on the Revolutions of Years. An early treatise on Solar Returns. The Book on the Significations of the Planets in Nativities. The Epistle on Conjunctions. An early treatise on Mundane Astrology The Book of Thoughts. A Note on Interpretation. James H. Holden is the Research Director of the American Federation of Astrologers and has been especially interested in Classical and Medieval astrological works.

Dr. Benjamin Dykes produces essential new translations of traditional astrology texts for modern students. Persian Nativities I contains the first English translation of Masha'allah's natal work, The Book of Aristotle, and a new translation of his student Abu 'Ali al-Khayyat's influential On the Judgments of Nativities.

Sahl bin Bishr (Zahel) and Masha'allah were two of the most influential medieval astrologers from the Arabic period. This essential work in medieval astrology translates 16 of their works, most for the first time, and includes many charts and lengthy introductory remarks and explanations by the translator.