The several parts of a now-dismembered late-13th century Organon, owned and quite creatively annotated by John Chortasmenos, are presented and studied. The main copyist of this manuscript is also identified in a number of other manuscripts of philosophical contents. Chortasmenos' exegetical practice is also discussed, with special emphasis on his sources and on his extensive use of diagrams.
The paper presents the project Codices Graeci Antiquiores, whose goals are the census, the description and the study of Greek manuscripts in codex form from the first extant witnesses to the year 900 AD. Because of the extreme variety of the items included in such limits, a new catalogue description has been developed, by combining more epistemological models belonging to different disciplines, mainly codicology and papyrology.
© Università degli Studi di Roma "La Sapienza" - Piazzale Aldo Moro 5, 00185 Roma
