In June, 1529, he was ordered to inspect the citadel of Pisa and the fortifications of Arezzo and Livorno. In July and August he was sent to Ferrara to examine the celebrated defensive works there and to consult with the Duke, a great expert in fortifications. The Duke received him with great honour and took him over the fortifications himself, showed him his art collection and asked him for one of his works.[45] But Michelangelo suspected Capponi and the party of the Medici of taking advantage of his absence to delay the fortification of the town and his suspicions were confirmed by the neglected condition in which he found the work on his return. To block these intrigues he installed himself at San Miniato and would not stir from there again. His restless spirit felt the least breath of the rumours of treason which, as always, circulated in a besieged town and which unhappily, as the future showed, were only too well founded. Capponi, under suspicion, had been replaced as Gonfalonier by Francesco Carducci, but the untrustworthy Malatesta Baglioni, who later on was to give up the town, was named _Condottiere_ and governor-general of the Florentine troops. Michelangelo foresaw his treason and confided his suspicions to Carducci. Malatesta did not fail to hear of this denunciation. He was all-powerful at Florence as Generalissimo, and since a man of his type would stop at nothing when it was a question of revenge or of the removal of a dangerous adversary, Michelangelo believed himself lost. "I had resolved, however, to await without fear the end of the war," he writes on September 25, 1529, to Battista della Palla. "But on Tuesday morning the twenty-first of September a certain man came to me outside of the Porta San Niccolo, where I was on the bastions, and whispered in my ear that if I wished to save my life I must not stay any longer in Florence. He went with me to my house, brought me some horses, and did not leave me again until he had put me outside of Florence."