lieutenants named Isaac, whom he enjoined to devote all his attention to shielding her from harm. "Remain at your post," said he, "even should you hear that I am slain."
The most pressing necessity was now to revictual Rome, and this Belisarius essayed to do by carrying a fleet of provision ships up the Tiber. He had at his disposal two hundred war-galleys, which he loaded with foodstuffs and also equipped most effectively with a view to forcing a passage. Thus on the forecastle of each vessel he constructed a wooden bulwark after the pattern of mural battlements, from the shelter of which his marines could safely discharge their darts. As Totila had foreseen that such attempts would be made he had long taken measures to render them ineffectual. Across the river, at a narrow part about three miles up, he had raised an obstruction in the form of a wooden bridge, at each end of which on the bank he built a large tower, also of timber. In addition chains were used to close the passage over the water farther down. With a view to assailing this structure the Roman general joined together laterally two of his vessels, and on them he erected a tower, high enough to overtop those constructed by the Goths at the sides of the stream. A boat filled with combustibles, pitch, sulphur, resin, was placed on the summit of the tower; and this fabric he caused to be navigated in advance of his flotilla. His spare cavalry and infantry he drew up on the river bank near the sea; and he notified Bessas to make a diversion by sallying forth and assaulting simultaneously the Gothic camp.
Everything prospered as had been intended; the chains were broken through, the defenders of the wooden bridge were severely smitten by the arrows which were showered from the galleys, and the floating tower was brought into
