The interior is hollow and is approached by a staircase through a small iron door, very well arranged. Many valuable relics are preserved there, which may be seen from the outside through two iron gratings in the front. Among others is the head of St Donato, bishop and protector of Arezzo. In a chest of various materials, three braccia high, which I have caused to be newly made, are the bones of four saints. The predella of the altar, which entirely surrounds it, has in front of it the tabernacle or _ciborium_ of the Sacrament, in carved wood, all gilt, about three braccia high, and it may be seen from the choir side as well as from the front. As I have spared neither pains nor expense, since I considered myself bound to do my best to honour God, I may venture to affirm that, so far as my ability would allow, this work lacks nothing in the way of ornament, whether of gold, carving, painting, marble, trevertine, porphyry, or other stones. Now to return to Pietro Laurati. When he had completed the picture mentioned above, he did many things for St Peter's at Rome, which were afterwards destroyed in building the new church. He also executed some works at Cortona and at Arezzo, besides those already mentioned, and some others in the church of S. Fiore e Lucilla, a monastery of black monks, notably a representation in a chapel of St Thomas putting his hand into the wound in Christ's side. A pupil of Pietro was Bartolommeo Bologhini of Siena, who executed many pictures at Siena and other places in Italy. There is one by his hand at Florence, on the altar of the chapel of St Silvester in S. Croce. The paintings of this man were executed about the year 1350. In my book, which I have so often referred to, may be seen a drawing by Pietro, representing a shoemaker sewing in a simple but most natural manner with an admirable expression. It affords a good example of Pietro's peculiar style. His portrait by the hand of Bartolommeo Bologhini was in a picture at Siena, where not many years ago I copied it, in the manner seen above. Andrea Pisano, Sculptor and Architect.