During his lifetime, Bramante employed in his works one Ventura, a carpenter of Pistoia, who was a man of very good ability, and drew passing well. This Ventura, while in Rome, delighted much in taking measurements of antiquities; and afterwards, wishing to live once more in his native place, he returned to Pistoia. Now it happened in that city, in the year 1509, that a Madonna, which is now called the Madonna della Umilta, worked miracles; and since many offerings were brought to her, the Signoria that was then governing the city determined to build a temple in her honour. Whereupon Ventura, confronted with this opportunity, made with his own hand a model of an octagonal temple ...[15] braccia in breadth and ... braccia in height, with a vestibule or closed portico in front, very ornate within and truly beautiful. This having given satisfaction to the Signoria and to the chief men of the city, the building was begun according to the plans of Ventura, who, having laid the foundations of the vestibule and the temple, completely finished the vestibule, which he made very rich in pilasters and cornices of the Corinthian Order, with other carved stonework; while all the vaults in that work were made in like manner, with squares surrounded by mouldings, also in stone, and filled with rosettes. Afterwards, the octagonal temple was also carried to the height of the last cornice, from which the vaulting of the tribune was to rise, during the lifetime of Ventura; and since he was not very experienced in works of that size, he did not consider how the weight of the tribune might be safely laid on the building, but made within the thickness of the wall, at the first range of windows, and at the second, where the others are, a passage that runs right round, whereby he contrived to weaken the walls so much, that, the edifice being without buttresses at the base, it was dangerous to raise a vault over it, and particularly on the angles at the corners, upon which all the weight of the vault of that tribune must rest. Wherefore, after the death of Ventura, there was no architect with courage enough to raise that vault: nay, they had caused long and stout beams of timber to be brought to the place, in order to make a tent-shaped roof; but this did not please the citizens, and they would not have it put into execution. And so the building remained for many years without a roof, until, in the year 1561, the Wardens of Works besought Duke Cosimo that his Excellency should so favour them as to cause that tribune to be vaulted. Whereupon, in order to meet their wishes, the Duke ordered Giorgio Vasari to go there and see whether he could find some method of vaulting it; and he, having done this, made a model raising the building to the height of eight braccia above the cornice that Ventura had left, in order to make buttresses for it; and he decreased the breadth of the passage that runs right round between the walls, and reinforced the building with buttresses,