The merit of these Arabic versions is freely discussed by Renaudot, (Fabric. Bibliot. Graec. tom. i. p. 812 - 816,) and piously defended by Casiri, (Bibliot. Arab. Hispana, tom. i. p. 238 - 240.) Most of the versions of Plato, Aristotle, Hippocrates, Galen, etc., are ascribed to Honain, a physician of the Nestorian sect, who flourished at Bagdad in the court of the caliphs, and died A.D. 876. He was at the head of a school or manufacture of translations, and the works of his sons and disciples were published under his name. See Abulpharagius, (Dynast. p. 88, 115, 171 - 174, and apud Asseman. Bibliot. Orient. tom. ii. p. 438,) D'Herbelot, (Bibliot. Orientale, p. 456,) Asseman. (Bibliot. Orient. tom. iii. p. 164,) and Casiri, (Bibliot. Arab. Hispana, tom. i. p. 238, etc. 251, 286 - 290, 302, 304, etc.)