RHAZES. Continens ... en tibi liber quem in medicina edidit Abuchare filius Zacharie Rasis ... Hunc Helchauy, hoc est continentem appellavit ... [Venice, heirs of Ottaviano Scoto], 1529. Folio, 1 l(b.) + 1t + 1 + 14(cont.) + 508 + 1 l(b.), title printed in red and black, with large woodcut of an oriental scholar at his reading desk, within a magnificent woodcut border, at the top Aesculapius (Greek god of medicine) surrounded by putti n a frieze, the architrave supported by two pairs of double columns, at the foot a row of half-length portraits of Mesue, Avicenna, Hippocrates, Galen and Rhazes; printed in double columns, two elaborate woodcut initials on first page; old vellum with new endpapers. An extremely rare edition of Books 1-12 of Rhazes's Continens (al-Hawi), the largest and most important of his works. "The arrangement of the subject-matter in al-Hawi gives the impression that the author probably had several study-files, each containing quires for copying notes from reference books. He did not neglect to record even those opinions which seemed false to him, invariable adding his private comments and personal experiences ... Each of al-Razi's medical study files was reserved for notes on a certain topic [and from these he] selected subject-matter for his other written works" (A. Z. Iskandar, Religion, learning and science in the Abbasid period, pp. 373-74). Durling 3316: there is no copy in the British Library or in any of the Libraries of the University of Cambridge, it is not in Sander and not in Choulant, nor in any of the medical catalogues usually referred to: Wellcome, Bird, Parkinson and Lumb, Waller, Hunterian, Osler, Royal College of Physicians. See Garison-Morton 40 for the first edition (Brescia, 1486 - "the largest and heaviest of the medical incunabula")., Signatures: a-z8 [et]8 [us]8 [rum] 8 aa-ee8 ff6 [prescription sign]4 gg-zz8 [2et]8 [2us]8 [2rum]8 A-Q8., Colophon (Q8r): "Impressum Venetijs mandato & sumptibus heredi ... Octauiani Scoti ... per Bonetum Locatellum ... sexto supra millesimi quinquiesq; centesimum quintodecimo kalendas maias paschali videlicet tempore.", Device of Ottaviano Scoto on t.p., Printed in two columns., Decorative woodcut initials.