Perry's lucky star saved him from disaster, however, and on the 2d of August he undertook the perilous and awkward labor of floating his larger vessels over the shallow bar of the harbor at Erie. Barclay's blockading force had vanished. For Perry it was then or never. At any moment the enemy's topsails might reappear, and the American ships would be caught in a situation wholly defenseless. Perry first disposed his light-draft schooners to cover his channel, and then hoisted out the guns of the _Lawrence_ brig and lowered them into boats. Scows, or "camels," as they were called, were lashed alongside the vessel to lift her when the water was pumped out of them. There was no more than four feet of water on the bar, and the brig-of-war bumped and stranded repeatedly even when lightened and assisted in every possible manner. After a night and a day of unflagging exertion she was hauled across into deep water and the guns were quickly slung aboard. The _Niagara_ was coaxed out of harbor in the same ingenious fashion, and on the 4th of August Perry was able to report that all his vessels were over the bar, although Barclay had returned by now and "the enemy had been in sight all day." Perry endeavored to force an engagement without delay, but the British fleet retired to Amherstburg because Barclay was waiting for a new and powerful ship, the _Detroit_, and he preferred to spar for time. The American vessels thereupon anchored off Erie and took on stores. They had fewer than three hundred men aboard, and it was bracing news for Perry to receive word that a hundred officers and men under Commander Jesse D. Elliott were hastening to join him. Elliott became second in command to Perry and assumed charge of the _Niagara_. For almost a month the Stars and Stripes flew unchallenged from the masts of the American ships. Perry made his base at Put-in Bay, thirty miles southeast of Amherstburg, where he could intercept the enemy passing eastward. The British commander, Barclay, had also been troubled by lack of seamen and was inclined to postpone action. He was nevertheless urged on by Sir George Prevost, the Governor General of Canada, who told him that "he had only to dare and he would be successful." A more urgent call on Barclay to fight was due to the lack of food in the Amherstburg region, where the water route was now blockaded by the American ships. The British were feeding fourteen thousand Indians, including warriors and their families, and if provisions failed the red men would be likely to vanish.