Fol. 1. Cleomedis de motu circulari corporum caelestium, defective at the beginning. It begins at p. 619 of Ziegler's text and is written in seven hands ranging in date from the 14th to the 16th cent., with marginalia of the 15th and 16th centt. Fol. 67. 'Ιωάννου 'Aλεξανδρεως (sscr. το͡υ Φιλοπόνου) περί τής το͡υ ̕αστρολάβου χρήσεως, as published from Paris MSS. in Rheinisches Museum, vi (1839), 129. Written in five hands of the late 14th to the early 16th…