Aristoteles Latinus: 6-7. Categoriarum Supplementa

As a supplement to the edition of the Latin translations of Aristotle's Categories, L. Minio-Paluello and B.G. Dod edited the Latin versions of two smaller books that were closely linked to the study of the Categories during the whole Middle Ages. Porphyry's Isagoge or Introduction was considered as preparatory to the Aristotelian Categories, and the so-called Liber sex principiorum was used as its complement, since it deals mainly with the last six categories, which are treated more briefly in Aristotle's work.
The edition thus contains basically two texts: Boethius' translation of Porphyry's Isagoge as well as the extant fragments of the fourth century translation of the same work, done by Marius Victorinus, and the Liber sex principiorum. The introduction clarifies the manuscript tradition of both works and discusses the origin of the Liber sex principiorum, which is in fact an extract of an anonymous twelfth century work, but has been attributed erroneously to Gilbertus Porretanus. In an appendix, specimens of some Renaissance versions of the Categories are given. The indexes include a Greek-Latin and Latin-Greek lexicon of Porphyry's Isagoge, as well as a Latin index to the Liber sex principiorum.
The reprint of this 1966 edition of the Aristoteles Latinus will be welcomed by all scholars devoted to the history of Mediaeval logic and philosophy.