ALLKINDI, a celebrated Arabian physician and philosopher who flourished at Baghdad, and died about A.D. 880. From the extent of his knowledge, he has been styled the Thales and Pythagoras of Mahometans. He was the author of various excellent works on medicine, general philosophy, logic, music, arithmetic, geometry, and astronomy; and this too at a period when Europe was involved in a cloud of the deepest ignorance.—D'Herbelot Bibl. Orient. Bayle. Moreri.