Pietro was finished by L'Abacco a short time after the death of Antonio; and it was found that, in so far as appertained merely to the woodwork and the labour of the carpenters, it had cost four thousand one hundred and eighty-four crowns. In executing it, Antonio L'Abacco, who had charge of the work, acquitted himself very well, having a good knowledge of the matters of architecture, as is proved by the book of the buildings of Rome that he printed, which is very beautiful. This model, which is now to be found in the principal chapel of S. Pietro, is thirty-five palme[24] in length, twenty-six in breadth, and twenty palme and a half in height; wherefore, according to the model, the work would have been one thousand and forty palme in length, or one hundred and four canne,[25] and three hundred and sixty palme in breadth, or thirty-six canne, for the reason that the canna which is used in Rome, according to the measure of the masons, is equal to ten palme. For the making of this model and of many designs, there were assigned to Antonio by the Wardens of the building of S. Pietro fifteen hundred crowns, of which he received one thousand in cash; but the rest he never drew, for a short time after that work he passed to the other life. He strengthened the piers of the same Church of S. Pietro, to the end that the weight of the tribune might be supported securely; and he filled all the scattered parts of the foundations with solid material, and made them so strong, that there is no reason to fear that the building may show any more cracks or threaten to fall, as it did in the time of Bramante. This masterly work, if it were above the ground instead of being hidden below, would amaze the boldest intellect. And for these reasons the name and fame of this admirable craftsman should always have a place among the rarest masters.