Bonatti on Nativities
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A treasure of natal astrology, drawing on Abu 'Ali, 'Umar al-Tabari, Ptolemy, and al-Ridwan's commentary on the Tetrabiblos, among others. A detailed treatment of longevity calculations is followed by sections on physiognomy and personal character, and then all matters pertaining to the houses: prosperity and wealth, siblings, parents and their longevity, children, servants and illnesses, marriage and enemies, death, spirituality and travel, reputation and profession, friends, secret enemies. Lastly, Bonatti provides information on primary directions, profections, and other predictive techniques (309 pp). Click here for a PDF excerpt.

Bonatti on Mundane Astrology
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A large work on mundane astrology: discovering the Lord of the Year and the significator of the king, the condition of the people, assigning zodiacal degrees to regions of the world, weather and natural disasters, war, comets, eclipses, fixed stars, the Head and Tail of the Dragon. Click here for a PDF excerpt .

Bonatti on Lots
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This volume is a detailed treatment of Parts or Lots, including the 7 Hermetic Lots, the Lots of the houses, using Lots in commodities speculation and political upheaval and regime changes. Over 100 Lots that cover all branches of astrology, drawing largely on Abu Ma’shar.

Bonatti on Horary
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One of the most thorough treatments of horary, drawing especially on the medieval masters Sahl b. Bishr and Masha’allah. Surprising predictive techniques combine elections, solar revolutions, and horary charts. Includes two charts from Bonatti’s own career. Learn whether your horse will win the race, your husband is cheating on you, or the king will fall from grace (278 pp)! Click here for a PDF excerpt.

Bonatti on Elections
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A long treatise on elections, often drawing on ‘Ali al-‘Imrani, starting with a thorough discussion on how elections work and how to design them! Elections from all 12 houses, from when to elect surgery to when to make a journey (180 pp). Click here for a PDF excerpt.

Bonatti on Basic Astrology
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This volume contains Treatise 1-3 of Bonatti’s Book of Astronomy, which covers all areas of basic astrological principles and interpretation, as well as a defense of astrology. Click here for a PDF excerpt.

Bonatti’s 146 Considerations
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The famous handbook of Considerations for judging charts retranslated. Coley’s paraphrased edition is superseded by this version, including key passages on the role of God and freedom in horary. (89 pp). Click here for a PDF excerpt.

Works of Sahl & Masha’allah
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Sahl bin Bishr (Zahel) and Masha’allah were two of the most influential medieval astrologers from the Arabic period. In a new work of 618 pages, Dr. Benjamin Dykes translates 16 of their most important works–many of them for the first time in any modern language! This essential work in medieval astrology includes many charts and lengthy introductory remarks and explanations by the translator.

Click here for a PDF excerpt.

Persian Nativities II: ‘Umar al-Tabari & Abu Bakr
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This second volume of the Persian Nativities series contains two books, a translation of Three Books of Nativities by ‘Umar al-Tabari and On Nativities by Abu Bakr.

Preview the introduction here.

Preview ‘Umar al-Tabari here.

Preview Abu Bakr here.

The Book of the Nine Judges
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The great medieval compendium of Persian and Arabic masters

The Book of the Nine Judges is the largest traditional compilation of horary astrology, drawn from nine Persian and Arabic astrologers. Translated from Arabic sources chiefly by the 12th-Century Latin translator Hugo of Santalla, it achieved legendary status but has never before been translated into any modern language. It includes material by Masha’allah, ‘Umar al-Tabari, Abu Ma’shar, Sahl bin Bishr, al-Kindi, Abu ‘Ali al-Khayyat, “Dorotheus,” “Aristotle,” and Jirjis. Click here for a PDF excerpt.

Leopold of Austria: Compilation on the Science of the Stars
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Leopold of Austria’s Compilation is a handy 13th Century guide to all branches of astrology, written around 1271. Sometimes called a “shorter Bonatti,” Leopold draws on many of the same Arabic astrologers as Bonatti does, but often from different Latin translators. These include Sahl b. Bishr, Abu Ma’shar, ‘Umar al-Tabari, ‘Ali al-‘Imrani, al-Kindi, and others.

Click here for a PDF excerpt.