Six thousand Turks disembarked, forty cannons were landed, Sinān himself directed every movement, and arranged his batteries and earthworks. A heavy cannonade produced no effect on the walls, and the Turkish admiral thought of the recent repulse at Malta, and of the stern face of his master; and his head sat uneasily upon his neck. The siege appeared to make no progress. Perhaps this venture, too, would have failed, but for the treachery of a French renegade, who escaped into the trenches and pointed out the weak places in the walls. His counsel was taken; the walls fell down; the garrison, in weariness and despair, had lain down to sleep off their troubles, and no reproaches and blows could rouse them. On August 15th Gaspard de Villiers was forced to surrender, on terms, as he believed, identical with those which Suleymān granted to the Knights of Rhodes.[41] But Sinān was no Suleymān; moreover, he was in a furious rage with the whole Order. He put the garrison--all save a few--in chains, and carried them off to grace his triumph at Stambol. Thus did Tripoli fall once more into the hands of the Moslems, forty-one years after its conquest by the Count Don Pedro Navarro.[42] The misfortunes of the Christians did not end here. Year after year the Ottoman fleet appeared in Italian waters, marshalled now by Sinān, and when he died by Piāli Pasha the Croat, but always with Dragut in the van; year by year the coasts of Apulia and Calabria yielded up more and more of their treasure, their youth, and their beauty, to the Moslem ravishers; yet worse was in store. Unable as they felt themselves to cope with the Turks at sea, the Powers of Southern Europe resolved to strike one more blow on land, and recover Tripoli. A fleet of nearly a hundred galleys and ships, gathered from Spain, Genoa, "the Religion," the Pope, from all quarters, with the Duke de Medina-Celi at the head, assembled at Messina. Doria was too old to command, but his kinsman, Giovanni Andrea, son of his loved and lost Giannettino, led the Genoese galleys. The Fates seemed adverse from the outset. Five times the expedition put to sea; five times was it driven back by contrary winds.[43] At last, on February 10, 1560, it was fairly away for the African coast. Here fresh troubles awaited it. Long delays in crowded vessels had produced their disastrous effects: fevers and scurvy and dysentery were working their terrible ravages among the crews, and two thousand corpses were flung into the sea. It was impossible to lay siege to Tripoli with a diseased army, and when actually in sight of their object the admirals gave orders to return to Jerba.