Eudoxus in Harpers Dictionary of Classical Antiquities

（Εὔδοξος). A celebrated astronomer and geometrician of Cnidus, who flourished B.C. 366. He studied at Athens and in Egypt, but probably spent some of his time at his native place, where he had an observatory. He is said to have been the first who taught in Greece the motions of the planets. His works are lost (Quaest. Nat. vii. 3; Vitruv. ix. 9; Plin. H. N. ii. 47).