Sebastiano became aware, that in such a competition, his own design would not appear to much advantage in Rome, and he improved it. But occasionally he fell into some harshness of manner, owing to the difficulties he there encountered. Yet, in several of his works, he was assisted by Michelangiolo, from whose design he painted that _Pietà_, placed at the Conventuali of Viterbo, and the Transfiguration, with the other pieces which he produced, during six years, for S. Pietro in Montorio, at Rome. It is stated by Vasari, that Michelangiolo united with him, in order to oppose the too favourable opinion entertained by the Romans, of Raffaello. He adds, that on the death of the latter, Sebastiano was universally esteemed the first artist of his time, upheld by the favour of Michelangiolo; Giulio Romano, and the rest of the rival school, being all inferior to him. I am almost at a loss how to judge of a fact, which, if discredited, seems to cast an imputation upon the historian, and, if received, reflects very little credit upon Buonarotti; and the reader will do best, perhaps, to decide for himself. The name of Sebastiano must also be added to the list of inventors, for his new method of oil painting upon stone, upon which plan he executed the _Flagellazione_, for S. Pietro in Montorio, a work as much defaced by time as the others which he made in fresco remain at the same place entire. He coloured also upon stone several pictures for private houses, a practice highly esteemed at its earlier period, but which was soon abandoned owing to the difficulty of carriage. Upon this plan, or some other resembling it, we find several pictures of the sixteenth century executed, and which, at this period, are esteemed in museums real antiques.[42]