BOETHIUS, Anicius Manlius Torquatus Severinus. De arithmetica ... De musica ... De geometria, Venice: Joannes and Gregorius de Gregoriis, de Forlivio, 8 July 1499. Part 2 only (of 3) of Boethius' Opera. 2° (296 x 207mm.). 74 leaves including the final register leaf, 65 lines and headline, double column, gothic letter, numerous woodcut diagrams in the text, large device on last page, ornamental initials, a few large. (Title repaired in the margins with no loss, repaired tear in the next leaf, 2 wormholes from the beginning increasing to 3 affect text slightly, a few leaves very browned, some waterstaining, several untidy 17th-century marginalia). Modern half calf preserving an 18th-century spine. Hain 3352; BMC V, 351; Goff B-768.