Before proceeding farther, it should be noticed that, on a rough average, each seat in the Latin Library, left hand, contained 47 volumes, and in the same Library, right hand, 43 volumes. In the Greek Library, each seat contained 50 volumes; in the Inner Library, 31 volumes; in the Bibliotheca pontificia, 21 volumes.
In the next place I will give the results of the examination of a catalogue[1] of the Library, which M. Fabre, with much probability, assigns to the year 1512[2]. It begins as follows with the Latin Library:
| Ad sinistra' Pontificis bibliothecam introeuntibus | ||
| In primo scanno supra | [27] | |
| ""infra | [27] | |
| Finis primi scanni sub et supra | [54] |
The nine seats (banchi) of the left side of the Latin Library are gone through in the same way as the first, with the result that each is shewn to have two shelves. The total number of books is 457, or 27 more than in 1481.
On the opposite, or right hand side of the Library, the first two seats have three shelves, and are described as follows:
| In primo scanno supra | [22] | |
| ""infra | [27] | |
| "eodem scanno inferius siue sub infra | [26] | |
| Finis primi scanni sub et subter | [75] |
On this side of the Latin Library the number of books has risen to 360 as against 313 of the previous catalogue.
In the Greek Library there are similarly two shelves to each seat, and the total number of volumes is 407 as against 400.
The account of the Inner Library begins as follows:
| In secretiori bibliotheca | |
| In iijº. scanno supra | [16] |
| ""infra | [17] |
| ""inferius siue sub infra | [21] |
