Note (return) — THE DECISIVE PERIOD OF THE WAR. SURRENDER OF BURGOYNE AND CAPTURE OF PHILADELPHIA BY HOWE. THE NAVAL PART IN EACH OPERATION 1777

Lord Howe held on at the head of the Chesapeake until satisfied that his brother no longer needed him. On the 14th of September he started down the Bay with the squadron and convoy, sending ahead to the Delaware a small division, to aid the army, if necessary. The winds holding southerly, ten days were required to get to sea; and outside further delay was caused by very heavy weather. The Admiral there quitted the convoy and hastened up river. On the 6th of October he was off Chester, ten miles below Philadelphia. The navy had already been at work for a week, clearing away obstructions, of which there were two lines; both commanded by batteries on the farther, or Jersey, shore of the Delaware. The lower battery had been carried by troops; and when Howe arrived, the ships, though meeting lively opposition from the American galleys and fire-rafts, had freed the channel for large vessels to approach the upper obstructions. These were defended not only by a work at Red Bank on the Jersey shore, but also, on the other side of the stream, by a fort called Fort Mifflin, on Mud Island.18 As the channel at this point, for a distance of half a mile, was only two hundred yards wide, and troops could not reach the island, the position was very strong, and it detained the British for six weeks. Fort Mifflin was supported by two floating batteries and a number of galleys. The latter not only fought, offensively and defensively, but maintained the supplies and ammunition of the garrison.