The ground on which the Fort Mifflin of to-day stands was deeded to the Federal government by the State of Pennsylvania in 1795, and the present works were commenced in 1798. As the strategic advantage and the ease of fortification of the point had been amply demonstrated during the Revolution, a large and strong fortress was built and garrisoned until changing conditions of warfare caused its importance to be a thing of the past and its garrison to be withdrawn in 1853. During the Civil War the fort was garrisoned by a volunteer regiment and served as a detention place for prisoners taken during that conflict, but this structure saw no service in this war and, indeed, has never fired a shot in anger. After the Civil War the place was deserted, though the government has ever since kept a care-taker there. The government land reservation includes over three hundred acres. In other parts of the island are more modern government stations, but in these we have no present interest. The old fortification is surrounded by a deep moat over which are bridges leading to its three sally-ports. Only one of these entrances is open now. Passing through the thick walls of this entrance, one finds one’s self facing a large parade ground, which is surrounded by quaint, old-fashioned structures--the barracks and officers’ quarters of a by-gone day. On the south of the parade is a very charming little Georgian chapel, through whose broken window-panes pour in damp winds. [Illustration: ENTRANCE TO FORT MIFFLIN, PHILADELPHIA] In the casemates of the old fort were confined Morgan’s men during the Civil War. It is a dark and dismal trip to the damp rooms in which these men were confined, as one goes through narrow subterranean corridors beneath the thick walls of the fort. One comes to a large cavernous chamber lighted from above by a single narrow slit. At one end of this chamber is an open fire-place. On the walls are scribbled numerous names and messages from Morgan’s men. It might perhaps be an interesting matter to copy down these names and messages, if one had the patience and time to do so, but hardly a task within the province of this chapter. May be the room was cheerful enough in the days of its use with the big fire-place containing a roaring fire, but it is dismal now, in all conscience! From the walls of Fort Mifflin there is a fine view of the Delaware River. Natives of the neighborhood say that the marshes round about yield fine gunning during the season. Directly across the Delaware from Fort Mifflin--the river being about a mile wide, here--are the remains of Fort Mercer and the outworks which made up this strong little post in the days of the Revolution. Fort Mercer and its earthworks are preserved by the nation, forming a public reservation which annually receives many visitors.