DIOSCORIDES, PEDANIUS

born AD 40, , Anazarbus, Cilicia died c. 90 Greek physician and pharmacologist whose work De materia medica was the foremost classical source of modern botanical terminology and the leading pharmacological text for 16 centuries. Dioscorides' travels as a surgeon with the armies of the Roman emperor Nero provided him an opportunity to study the features, distribution, and medicinal properties of many plants and minerals. Excellent descriptions of nearly 600 plants, including cannabis, colchicum, water hemlock, and peppermint, are contained in De materia medica. Written in five books around the year 77, this work deals with approximately 1,000 simple drugs. The medicinal and dietetic value of animal derivatives such as milk and honey is described in the second book, and a synopsis of such chemical drugs as mercury (with directions for its preparation from cinnabar), arsenic (referred to as auripigmentum, the yellow arsenic sulfide), lead acetate, calcium hydrate, and copper oxide is found in the fifth book. He clearly refers to sleeping potions prepared from opium and mandragora as surgical anesthetics. Although the work may be considered little more than a drug collector's manual by modern standards, the original Greek manuscript, which was copied in at least seven other languages, describes most drugs used in medical practice until modern times and served as the primary text of pharmacology until the end of the 15th century. Authoritative editions have been published in Greek (190614) and in English (1934).