Vat.gr.244

From the works of Ammonius on the five voices original: "p. 1"

Porphyry’s Introduction, or on the five voices, with a brief explanation by Magentinus original: "p. 3"

From the works of Simplicius, the additions to the Categories original: "p. 32"

Aristotle’s Categories with an explanation regarding its purpose and other shorter matters

Aristotle’s On Interpretation with an explanation, as well as some other shorter matters original: "p. 91"

A summary of the three syllogistic figures original: "p. 138"

Magentinus’s brief explanation of the three figures of Aristotle original: "p. 139"

Aristotle’s Prior Analytics, books one and two, incomplete with an explanation original: "p. 141"

By the same author, Posterior Analytics, books one and two, with an explanation original: "p. 301"

By the same author, the eight books of the Topics with an explanation original: "p. 447"

By the same author, Sophistical Refutations with certain introductory remarks upon them, and also an explanation original: "p. 581, 583"

A circular library stamp of the Vatican Apostolic Library shows the crossed keys and the papal tiara.