In place of that he used gravel and other materials cast with cement, in such a manner that no defect could be seen in the inner part of the work, and on the outer side he made parapets and other things, insomuch that to the eye it appeared as if made altogether new; but it was made lighter all over and weakened throughout. Five years afterwards, when the flood of the year 1557 came down, it happened that the bridge collapsed in such a manner as to make known the little judgment of the Clerks of the Chamber and the loss that Rome suffered by departing from the counsel of Michelagnolo, who predicted the ruin of the bridge many times to me and to his other friends. Thus I remember that he said to me, when we were passing there together on horseback, "Giorgio, this bridge is shaking under us; let us spur our horses, or it may fall while we are upon it." But to return to the narrative interrupted above; when the work of the Montorio was finished, and that much to my satisfaction, I returned to Florence to re-enter the service of Duke Cosimo, which was in the year 1554. The departure of Vasari grieved Michelagnolo, and likewise Giorgio, for the reason that Michelagnolo's adversaries kept harassing him every day, now in one way and now in another; wherefore they did not fail to write to one another daily. And in April of the same year, Vasari giving him the news that Leonardo, the nephew of Michelagnolo, had had a male child, that they had accompanied him to baptism with an honourable company of most noble ladies, and that they had revived the name of Buonarroto, Michelagnolo answered in a letter to Vasari in these words: "DEAR FRIEND GIORGIO, "I have had the greatest pleasure from your letter, seeing that you still remember the poor old man, and even more because you were present at the triumph which, as you write, you witnessed in the birth of another Buonarroto; for which intelligence I thank you with all my heart and soul. But so much pomp does not please me, for man should not be laughing when all the world is weeping. It seems to me that Leonardo should not make so much rejoicing over a new birth, with all that gladness which should be reserved for the death of one who has lived well. Do not marvel if I delay to answer; I do it so as not to appear a merchant. As for the many praises that you send me in your letter, I tell you that if I deserved a single one of them, it would appear to me that in giving myself to you body and soul, I had truly given you something, and had discharged some infinitesimal part of the debt that I owe you; whereas I recognize you every hour as my creditor for more than I can repay, and, since I am an old man, I can now never hope to be able to square the account in this life, but perhaps in the next. Wherefore I pray you have patience, and remain wholly yours. Things here are much as usual."