RENAISSANCE AND MANNERISM C. I42Q-C. l6OO him Superintendent of the Vatican Buildings, an all but nominal appointment at first. In IS37 he was consulted about a more stately rebuilding of the municipal palaces on the Capitol; but nothing materialised. Then in 1546 San Gallo died, and now Michelangelo was called upon almost at once to complete the Palazzo Farnese, redesign St. Peter's and replan the Capitol. At the Palazzo Farnese we shall now easily discover his Mannerism in the second-floor details (pL uv). The triplicating of the pilasters and especially the odd discordant framing of the windows with corbels on the sides not supporting anything and special corbels immediately above, on which the segmental pediments rest, are Michelangelo's personal expression, individual to an unprecedented extent and impossible before the breaking up first of the transcendentally ordered world of the Middle Ages and then of the aesthetically ordered world of the Renaissance. Michelangelo's architectural masterpiece, the back and the dome of St. Peter's, are also an expression of revolt against Bramante and the spirit of the Renaissance, although they are not to the same extent Mannerist. When Michelangelo was appointed by Paul III, the Farnese Pope, to be architect of St. Peter's, he found die church essentially left as it had been at Bramante's death. Raphael and San Gallo had designed naves to comply with the religious demands of the first post-Renaissance generation. But they were not begun. Michelangelo returned to the central plan, but he deprived it of its all-governing balance (fig. 60). He kept the arms of the Greek cross, but where Bramante (fig. 56) had intended sub-centres repeating on a smaller scale the motif of the main centre, Michelangelo cut off the arms of the sub-centres, thus condensing the composition into one central dome resting on piers of a dimension that Bramante would ha^e refused as colossal, i.e. inhuman, and a square ambu- latory round. As for the exterior, he altered Bramantc's plans in exactly the same spirit, replacing a happily balanced variety of noble and serene motifs by a huge order of Corinthian pilasters supporting a massive attic and by strangely incongruous windows and niches surrounded by cediculce and smaller niches of several sizes—a mighty yet somewhat discordant ensemble. At the west end, Michelangelo wanted to add a portico of ten columns with four columns in front of the middle ones. This—it was never built, because Maderna after 1600 added a nave—would have destroyed Bramante's ideal symmetry, and in fact the classic ideal of symmetry altogether; 114.