Colonel Donop received a mortal wound; and Lieutenant Colonel Mengerode, the second in command, fell about the same time.

Lieutenant Colonel Minsing, the oldest remaining officer, drew off his troops, and returned next day to Philadelphia.

The loss of the assailants was estimated by the Americans at four hundred men.
The garrison was reinforced from fort Mifflin, and aided by the galleys which flanked the Hessians in their advance and retreat.

The American loss, in killed and wounded, amounted to only thirty-two men.
[Sidenote: The Augusta frigate blows up.] The ships having been ordered to co-operate with Count Donop, the Augusta, with four smaller vessels, passed the lower line of chevaux-de-frise, opposite to Billingsport, and lay above it, waiting until the assault should be made on the fort.

The flood tide setting in about the time the attack commenced, they moved with it up the river.