As, for instance, the fifth, sixth, and seventh books (the eighth is still wanting) of the Conic Sections of Apollonius Pergaeus, which were printed from the Florence Ms. 1661, (Fabric. Bibliot. Graec. tom. ii. p. 559.) Yet the fifth book had been previously restored by the mathematical divination of Viviani, (see his Eloge in Fontenelle, tom. v. p. 59, etc.)