11. The British general lost a month in procuring supplies from Canada. He now found himself hemmed in by nine thousand patriot soldiers. General Lincoln arrived with the militia of New England. Washington sent several detachments from the regular army. Morgan came with his riflemen. General Gates superseded Schuyler in command of the northern army. On the 8th of September, the American headquarters were advanced to Stillwater. On the 14th of the month, Burgoyne crossed the Hudson and took post at Saratoga. The two armies now came face to face. On the 19th, a general battle ensued, continuing until nightfall. The conflict, though severe, was indecisive; the Americans retired within their lines, and the British slept on the field. To the patriots the result of the battle was equivalent to a victory. [Sidenote: =Battle of Bemis's Heights.=] 12. The condition of Burgoyne grew critical. His supplies failed; his Canadian and Indian allies deserted his standard. On the 7th of October, he hazarded another battle, in which he lost his bravest officers and nearly seven hundred privates. The brave General Fraser was killed, and his disheartened men turned and fled from the field. The Americans were completely victorious. [Sidenote: =Burgoyne's Surrender.=] 13. Burgoyne now began a retreat, and on the 9th of October reached Saratoga. Here he was intercepted by Gates and Lincoln, and forced to surrender. On the 17th of October terms of capitulation were agreed on, and the whole army, numbering five thousand seven hundred and ninety-one, became prisoners of war. Among the captives were six members of the British Parliament. Forty-two pieces of brass artillery, five thousand muskets, and an immense quantity of stores were the fruits of the victory. [Illustration: PHILADELPHIA AND VICINITY.] 14. As soon as the invasion was at an end, a large portion of the army was dispatched to aid Washington in a great campaign in progress in the South. On the 23d of July, Howe had sailed from New York, with eighteen thousand men, to attack Philadelphia. Washington advanced his headquarters from Philadelphia to Wilmington. The American army, numbering about eleven thousand men, was concentrated at that place. The forces of Howe were vastly superior, but Washington hoped to beat back the invaders and save the capital. [Sidenote: =Battle of Brandywine.=]