The decorative work of the brothers Ghirlandajo can still be made out, at least in part, though time has made sad havoc with it. The edges of the vaulting were made prominent by classical moldings coarsely drawn in a dark colour; and at the key of each vault is a large architectural ornament, or coat of arms, surrounded by a wreath of oak-leaves and acorns, to commemorate the Della Rovere family. They are tied together on each side with long flaunting ribbons, which, with their shadows, extend for a considerable distance over the vaults. The semi-circular lunettes in the upper part of the wall under the vaults are all treated alike, except that those on the sides of the room, being larger than those at the ends (fig. 98), contain two subjects instead of one. The lower part, for about 3 feet in height, is painted to represent a solid marble balcony, behind which a Doctor or Prophet is supposed to be standing. He is visible from rather below the waist upwards, and holds in his hand a scroll bearing an appropriate text. On each side of the figure in the smaller lunettes, resting on the balcony, is a large vase of flowers; and behind it a clear sky. Round the upper edge of the lunette is a broad band of oak-leaves, and fruits of various kinds. The figures, of which there were evidently twelve originally, are the following, beginning with the one at the north-east corner over the door leading into the Greek Library, and proceeding to the right: 1. HIERONYMUS. _Scientiam scripturarum ama, et vitia carnis non amabis._ 2. GREGORIUS. _Dei sapientiam sardonyco et zaphyro non confer._ 3. THOMAS. _Legend illegible._ 4. BONAVENTURA. _Fructus scripturae est plenitudo aeternae felicitatis._ 5. ARISTOTELES. } } 6. DIOGENES. } } 7. CLEOBULUS. } } _Legends illegible._ 8. ANTISTHENES. } } 9. SOCRATES. } } 10. PLATO. } 11. AUGUSTINUS. _Nihil beatius est quam semper aliquid legere aut scribere._ 12. AMBROSIUS. _Diligentiam circa scripturas sanctorum posui._ Jerome and Gregory occupy the east wall; Thomas Aquinas and Bonaventura the first lunette on the south wall, over the door of entrance; Aristotle and Diogenes the next, succeeded by Cleobulus and Antisthenes on the west wall; on the first lunette on the north wall are Socrates and Plato; in the second Augustine and Ambrose, facing Aquinas and Bonaventura. Thus the eastern half of the library was presided over by doctors of the Christian Church, the western by pagan philosophers.