A late 13th-century Byzantine manuscript from Constantinople containing Aristotle's Organon (De interpretatione, Prior analytics, Posterior analytics, and Topics), accompanied by diagrams and other textual materials copied during the Paleologan Renaissance at the time of the Paleologi Dynasty, 1259-1448. The manuscript is extensively annotated with marginal scholia and interlinear glosses, some of which are unknown and as yet unpublished. Many of the scholia and diagrams in the manuscript appear to have been added by John Chortasmenos (ca. 1370-1430). Commentators include Alexander of Aphrodisias, Nicephorus Gregoras, Leo Magentus, John Philoponus, Michael Psellus, and Themistius.