is slender and does not lean so much, not being burdened by so great a weight, by a great measure, as is this campanile, which is praised, not because it has in it any design or beautiful manner, but simply for its extravagance, it appearing impossible to anyone who sees it that it can in any wise keep standing. And the same Bonanno, while the said campanile was building, made, in the year 1180, the royal door of bronze for the said Duomo of Pisa, wherein are seen these letters: EGO BONANNUS PIS. MEA ARTE HANC PORTAM UNO ANNO PERFECI, TEMPORE BENEDICTI OPERARII. Next, from the walls that were made from ancient spoils at S. Giovanni Laterano in Rome, under Lucius III and Urban III, Pontiffs, when the Emperor Frederick was crowned by this Urban, it is seen that the art was going on continually improving, because certain little temples and chapels, built, as has been said, of spoils, have passing good design and certain things in them worthy of consideration, and among others this, that in order not to overburden the walls of these buildings the vaulting was made of small tubes and with partitions of stucco, praiseworthy enough for these times. And from the mouldings and other parts it is seen that the craftsmen were going on striving in order to find the good way. Innocent III afterwards caused two palaces to be built on the Vatican Hill, which were passing good, in so far as it has been possible to discover; but since they were destroyed by other Popes, and in particular by Nicholas V, who pulled down and rebuilt the greater part of one palace, there will be nothing said of them but this, that a part of them is to be seen in the great Round Tower and part in the old sacristy of S. Pietro. This Innocent III, who ruled for nineteen years and took much delight in building, made many edifices in Rome; and in particular, with the design of Marchionne Aretino, both architect and sculptor, the Conti Tower, so called from his own surname, seeing that he was of that family. The same Marchionne, in the year when Innocent III died, finished the building of the Pieve of Arezzo and likewise the campanile, making in sculpture, for the facade of the said church, three rows of columns one above the other, with great variety not only in the fashion of the capitals and the bases but also in the shafts of the columns, some among them being thick, some slender, some joined together two by two, and others four by four. In like manner there are some twined in the manner of vines, and some made in the shape of figures acting as supports, with diverse carvings. He also made therein many animals of diverse sorts that support on the middle of their backs the weights of those columns, and all with the most strange and extravagant inventions that can possibly be imagined, and not only wide of the good order of the ancients but almost wide of all just and reasonable proportion. But with all this, whosoever sets out well to consider the