With these three examples I conclude the section of my work which deals with what may be called the pagan conception of a library in the fulness of its later development. Unfortunately, no enthusiast of those distant times has handed down to us a complete description of his library, and we are obliged to take a detail from one account, and a detail from another, and so piece the picture together for ourselves. What I may call "the pigeon-hole system," suitable for rolls only, was replaced by presses which could contain rolls if required, and certainly did (as shewn (fig. 13) on the sarcophagus of the Villa Balestra), but which were specially designed for _codices_. These presses were sometimes plain, sometimes richly ornamented, according to the taste or the means of the owner. With the same limitations the floor, the walls, and possibly the roof also were decorated. Further, it was evidently intended that the room selected for books should be used for no other purpose; and, as the books were hidden from view in their presses, the library-note, if I may be allowed the expression, was struck by numerous inscriptions, and by portraits in various materials, representing either authors whose works were on the shelves, or men distinguished in other ways, or friends and relations of the owner of the house. The Roman conception of a library was realised by Pope Sixtus V., in 1587[113], when the present Vatican Library was commenced from the design of the architect Fontana. I am not aware that there is any contemporary record to prove that either the Pope or his advisers contemplated this direct imitation; but it is evident, from the most cursory inspection of the large room (fig. 16), that the main features of a Roman library are before us[114]; and perhaps, having regard to the tendency of the Renaissance, especially in Italy, it would be unreasonable to expect a different design in such a place, and at such a period. This noble hall--probably the most splendid apartment ever assigned to library-purposes--spans the Cortile del Belvedere from east to west, and is entered at each end from the galleries connecting the Belvedere with the Vatican palace. It is 184 feet long, and 57 feet wide, divided into two by six piers, on which rest simple quadripartite vaults. The north and south walls are each pierced with seven large windows. No books are visible. They are contained in plain wooden presses 7 feet high and 2 feet deep, set round the piers, and against the walls between the windows. The arrangement of these presses will be understood from the general view (fig. 16), and from the view of a single press open (fig. 17).