The divisions of Stirling, Sullivan, and Greene (the latter composed of the brigades of Muhlenberg and Weeden), with Morgan's corps, and Bland's regiment of horse, accompanied by Washington in person, left Philadelphia on the morning of the 24th of August, and encamped at Red Clay Creek, a few miles below Wilmington, the next day. The [[August 25, 1777]] principal portion of the American cavalry were under the immediate command of Count Pulaski. General Nash, with Proctor's artillery, embarked in flat-boats upon the Delaware, and proceeded to Chester, from whence he pressed forward to Wilmington. The whole effective force then present and fit for duty consisted of about eleven thousand men, including about eighteen hundred of the Pennsylvania militia. Washington established his head-quarters at Wilmington, and made immediate preparations to oppose the march of the enemy, he having been informed, by scouts, of their arrival at the head of Elk. The Pennsylvania and Delaware militia--the former under General Armstrong, the latter under General Rodney--were ordered to press forward to the head * Manuscript letter from General Agnew to his wife, dated "Camp on the River Elk, August 30th, 1777." In this epistle he wrote, "I have not had the happiness to receive any letter since the one which brought me the plan of a house, in which I trust in God yet to pass many, many happy years in the society of my worthy Betty and the two dear children, as the best and true real reward for all we have undergone." Alas! five weeks afterward he was slain in the battle at Germantown, and wife and children saw him no more. ** This is a view of the southerly front of the meeting-house. The building is very substantially built ol stone. Much of it is serpentine, whieh abounds in that region, and of which several houses are constructed. I was informed that the stains made by the blood of the wounded carried in there at the time of the battle are yet visible upon the floor. The Hicksite party hold present possession of the house; the Orthodox have built a place of worship near. [[[Encampment on Red Clay Neck.--Howe's Proclamation.--Retreat of the Americans across the Brandywine.]]]