From the moment of Burgoyne's surrender, the tide of the war was fitful, but on the whole, towards American success. There were still vicissitudes, now and then an apparent back-sliding; Charleston was taken by Clinton; massacres by Indians took place in Pennsylvania; the progress of the cause at times seemed grievously slow. On the other hand, "mad" Anthony Wayne assaulted and took Stony Point, on the Hudson; Paul Jones made vigorous havoc with the British war-ships, conquering the _Serapis_ and carried terror to the English by approaching close to their coast with his doughty _Bonhomme Richard_; Marion and Sumter kept up constant hostilities with the British in South Carolina; and the vexatious character of the war was evidently wearying the patience, and wearing upon the determination, of the royal government. [Sidenote: Surrender of Cornwallis.] The final scene of the war, at least that which most obtrusively stands forth in its panorama, was the siege and capture of Yorktown, in Virginia, and the surrender of General Lord Cornwallis with seven thousand troops. On this occasion the Americans had the aid of a corps of French troops under Count Rochambeau, while the French Admiral de Grasse guarded York River. The siege was so vigorous that in ten days Lord Cornwallis found himself unable to hold the town. But for a propitious rain-storm, he might yet have saved his army, and thus protracted the war. His attempt to leave Yorktown under cover of night was, however, frustrated by the outburst of a tempest; and he was forced to send word to Washington that he would surrender. [Sidenote: Peace.] This he did, with all the customary formalities of war, on the 19th of October, 1781. By this act seven thousand British troops, the largest force left on American soil, were withdrawn from the conflict. It was the death-blow to British hopes. The war dragged on, however, for two years more. The royalist troops held New York, Charleston, and Savannah, but did not venture upon aggressive projects. At last, a treaty was made at Paris, on the 3d of September, 1783, by the conditions of which Great Britain grudgingly acknowledged the independence of the United States of America. [Sidenote: The Revolutionary Heroes.]