Note 13 — Chapter I · THE GUILD OF THE COMACINE MASTERS

Mrs. Jameson finds the Santi Quattro illustrated in a predella in Perugia Academy. In one scene they are kneeling before the Emperor with their implements in their hands. In another they are bound to four columns and tortured. In a third they are in an iron cage and being thrown into the sea. In their own church they are represented as lying in one sarcophagus with crowns on their heads. In sculpture they also occur on the façades of several early churches; on the Arco di S. Agostino, and lastly on Or San Michele at Florence, where Nanni di Banco had so much trouble in squeezing the four of them into one niche, that Donatello had to help him. These sculptures were placed by the Arte of masons and stone-cutters, and they naturally chose their patron saints.