Carota," with a predella beneath, full of most beautiful figures coloured in oil by Ridolfo, son of Domenico Grillandai. In like manner the half-length Madonna in marble which is over the side-door of the Misericordia, on the facade of the Cialdonai, is by Andrea's hand, and was highly praised, because in it he had imitated the good antique manner, contrary to his habit, which was always different from it, as shown by some designs of his which are in our book, and in which he represents all the scenes from the Apocalypse. Now Andrea had studied architecture in his youth, and an opportunity occurred for his employment in this art by the commune of Florence, for as Arnolfo was dead and Giotto absent, he was entrusted with the preparation of plans for the castle of Scarperia, which is in Mugello at the foot of the Alps. Some say, though I will not vouch for the truth of it, that Andrea stayed a year at Venice, and there executed some small marble figures which are on the facade of S. Marco, and that in the time of M. Piero Gradenigo, doge of that republic, he designed the Arsenal. But as I know nothing of this beyond the bare mention of it which occurs in some writers, I must leave the matter to the judgment of my readers. From Venice he returned to Florence, where the city, fearing the coming of the emperor, with Andrea's co-operation, hastily added eight braccia to part of the wall between S. Gallo and the Prato Gate, and in other places he made bastions, palisades and works in earth and wood. Now some three years before, he had shown his skill in casting bronze in a much admired cross which he had sent to the Pope at Avignon, by means of his close friend Giotto; accordingly he was commissioned to make in bronze one of the doors of the church of S. Giovanni, for which Giotto had already made a very fine design. This, as I say, was given to him to finish, because he was considered the most talented, skilful, and judicious master of all those who had worked until then, not only in Tuscany, but throughout Italy. He set to work, resolved to spare neither time, pains, nor diligence upon the completion of a task of such importance. Fate was propitious to him in his casting, at a time when men were ignorant of the secrets known today, so that in the space of twenty-two years he brought the door to its present stage of perfection; and what is more, at the same time he made not only the tabernacle of the high altar of S. Giovanni, with an angel on either side which were considered most beautiful, but also the small marble figures about the base of the door of the campanile of S. Maria del Fiore, after Giotto's design, and about that campanile, in certain mandorle, the seven planets, the seven virtues, and the seven works of mercy in small figures in half-relief, which were then much admired. At the same time he made the three figures of four braccia high, which were placed in niches in that campanile, on the side