The Canon medicinae, a compendium of medical knowledge and a guide to clinical teaching, was derived from Galenic writings and infused by Avicenna with Arabic medical lore. The first three books were printed in Latin in 1472, and a complete edition appeared the following year. The edition displayed here is the first appearance of the Canon in print as well as the first printing of a medical treatise in Hebrew—and the only one produced during the fifteenth century.