Liber astrologiae (Liber Albumazarus)

Liber astrologiae, or Liber Albumazarus (as titled in the two incipits of British Library, Sloane MS 3983), also known as Abū Maʿshar Treatise, is a richly illustrated Latin compilation of astrological writings by Georgius Zothorus Zaparus Fendulus. Its ultimate source is Abū Maʿshar's Great Introduction to Astrology (9th century), transmitted through Hermann of Carinthia's Latin translation, Introductorium in astronomiam (1140), from which the text is largely derived. The British Library manuscript was copied and illuminated in the 14th century, possibly in Flanders (perhaps Bruges), northern France or Burgundian Netherlands, and it is the second-oldest surviving witness to the work attributed to Fendulus, after Paris, Bibliothèque nationale de France, Latin 7330. It also served as the model for another illuminated copy of the text, now in the Morgan Library & Museum, MS M.785.