Levis, who knew that his success depended on forestalling any English arrivals, lost no time in throwing up trenches and preparing batteries. Had the river continued closed, Quebec must soon have reverted to the French; but, on the 11th of May, the English were rejoiced to see a frigate approaching, and this, only four days after, was followed by another frigate and a ship of the line. These, commanded by Lord Colville, immediately attacked and destroyed or drove on shore the French flotilla, and at that sight Levis struck his tents and decamped as rapidly as he came, leaving behind him his baggage and artillery. Nor was the Marquis de Vaudreuil left long undisturbed at Montreal. The three expeditions, which had failed to meet the preceding summer, were now ordered to converge on Montreal--Amherst from Lake Ontario, Haviland from Crown Point, and Murray from Quebec. Amherst had been detained at Oswego by an outbreak of the Cherokees against us. This native tribe had been friendly to us, and we had built a fort in their country, and called it Fort Loudon, after Lord Loudon; but in the autumn of 1759 they had been bought over by the French, and made a terrible raid on our back settlements, murdering and scalping the defenceless inhabitants. Mr. Lyttelton, the Governor of South Carolina, marched against them with a thousand men, and compelled them to submission; but no sooner had he retired than they recommenced their hostilities, and Amherst sent against them Colonel Montgomery, with one thousand two hundred men, who made a merciless retaliation, plundering and burning their villages, so as to impress a sufficient terror upon them. Amherst had now ten thousand men; and though he had to carry all his baggage and artillery over the Ontario in open boats, and to pass the rapids of the upper St. Lawrence, he made a most able and prosperous march, reducing the fort of Île Royale on the way, and reached the isle of Montreal on the very same day as Murray, and a day before Haviland. Vaudreuil saw that resistance was hopeless, and capitulated on the 8th of September. The French were, according to contract, sent home, under engagement not to come against us during the remainder of the war. Besides this, Lord Byron chased a squadron of three frigates, convoying twenty store-ships to Quebec, into the Bay of Chaleur, and there destroyed them. Thus all the French possessions in North America, excepting the recent and feeble settlement of New Orleans, remained in our hands.