On the same day Major M’Donell made Mr. McKinley, the new appointed President of the Lower Counties on Delaware, his prisoner.

Lieut. Col. Loos, with the combined battalion of Rhall’s brigade, escorted the wounded and sick to Wilmington on the 14th.

On the 16th intelligence being received that the enemy were advancing on the Lancaster road, it was immediately determined to push forward and attack them; but a most violent fall of rain setting in, the intended attack became impracticable.

The enemy, apprised of the approach of the army, marched the whole night, and got to Yellow Springs, having, as is since known, all their small ammunition damaged by the rain. In their retreat they lost about 18 men killed, and some wounded.

On the 18th a detachment of light infantry was sent to the Valley Forge upon Schuylkill, where the enemy had a variety of stores, and a considerable magazine of flour, and were joined on the 20th by the guards.

Upon intelligence that Gen. Wayne was lying in the woods with a corps of 1,500 men, and four pieces of cannon, Maj. Gen. Grey was detached on the 20th to surprize him; and having, by the bayonet only, forced his pickets, he rushed in upon his encampment, killed and wounded not less than 300 on the spot, taking between 70 and 80 prisoners, including officers, their arms, and eight waggons loaded with baggage and stores. One captain of light infantry and three men were killed in the attack, and four men wounded. Gallantry in the troops, and good conduct in the General, were fully manifested upon this critical service.

On the 22d the army crossed the Schuylkill, at Fat Land Ford, without opposition; and on the 25th marched in two columns to German Town. Lord Cornwallis, with the British grenadiers, and two battalions of Hessian grenadiers, took possession of Philadelphia the next morning.

In the evening of the 26th, three batteries were begun, to act against the enemy’s shipping that might approach the town. These batteries were unfinished when they were attacked by a number of gallies, gondolas, and other armed vessels; and the largest frigate, the Delaware, mounting 30 guns, anchored within 500 yards of the town. About ten in the morning they began a heavy cannonade; but the tide falling, the Delaware grounded, and was taken possession of by the marine company of grenadiers, commanded by Capt. Averne.

The smaller frigates and armed vessels were forced (except a schooner that was driven on shore) to return under the protection of a fort, where there were two floating batteries, with three range of sunken machines, to obstruct the passage of the river, the lowest row being three miles below the fort.

The enemy had a redoubt upon the Jersey shore at Billing’s Point, with heavy guns in it, to prevent these machines from being weighed up, which 300 men posted there evacuated on the 1st of October; and Capt. Hammond immediately opened the navigation at that place, by removing a part of the chevaux de frize.