https://en.wikipedia.org/wiki/On_Interpretation

https://libcal.library.upenn.edu/event/11148297

9th-century copy of Boethius's Latin translation of Aristotle's De interpretatione, referred to in the manuscript as Periermenias, with the shorter of two commentaries that Boethius wrote on that work. Replacement leaves added in the 11th century to the beginning (f. 1-4) and end (f. 45-64) of the manuscript, in addition to providing the beginning and end of the Boethius (which is probably lacking 2 gatherings between extant gatherings 6 and 7), include the Periermeniae attributed to Apuleius in the medieval period, a poem by Decimus Magnus Ausonius on the seven days of Creation, a sample letter of a monk to an abbot with interlinear and marginal glosses, and other miscellaneous verses, definitions, and excerpts. Dot Porter, University of Pennsylvania, has determined that two groups of leaves are misbound; leaves 5-12 (the original order appears to have been 5, 9, 10, 6, 7, 11, 12, 8) and leaves 53-64 (the original order of the leaves appears to have been 61, 62, 53-60, 63, 64).