The grounds of the Gettysburg National Park, Adams County, Pennsylvania, comprise 2,054 acres and their acquisition was commenced in 1873. The scenes of the principal movements of the battle have been marked with suitable monuments. The battle of Gettysburg proved conclusively that the South could not invade the North. It was the last gallant attempt of a completely invested country to strike a fatal blow before the strangle-hold of its enemy should bring the end. [Illustration: The Slaughter Hollow The Entrance to the Tunnel TWO VIEWS TO-DAY OF THE “CRATER,” PETERSBURG, VA.] The largest of the national military parks is Chickamauga and Chattanooga National Park, which comprises 5,688 acres in the State of Georgia, in addition to nearly 150 acres in the State of Tennessee, the park being situated on the line between the States. In Tennessee is located Lookout Mountain. The acquisition of this reservation began under the provisions of an Act of Congress approved August 19, 1890. On the outskirts of Petersburg, Virginia, the remains of Forts Haskell and Steadman, the scene of the “Crater” episode, and part of the defences of the capital of the Confederacy which fell before Grant in 1865, have been preserved as a private enterprise. For a small consideration the “Crater” and the earthworks will be shown to the visitor. The Federal forces opposed to Fort Steadman--at the suggestion of a miner from Chambersburg, Pa., it is said--constructed a long tunnel from their lines to beneath the Confederate stronghold. An enormous quantity of powder was here, and when it was set off a body of soldiers was to charge through the breach and take the Confederate positions. The powder was exploded and the plan was successful in so far that it blew several hundred men into eternity, but when the attacking column reached the cavity in the ground its men became confused, giving the Confederates time to reform and to pour in a terrible fire upon the Union men concentrated in the broken ground below. The result was terrible carnage of United States troops. The “Crater” had become a death trap. Nearly three thousand men were killed in it in thirty minutes, the most disastrous loss the Federal forces suffered in so short a time during the war. The “Crater” to-day is a peaceful spot glorified by tall trees which keep the scene in continual gloom. The depression in the ground is ten feet or more in depth and about two hundred feet in diameter. A short walk brings one to the entrance to the tunnel where the lines of the United States were stretched. INDEX Adams, Fort, Newport, R. I., 222-231 Alamo, Texas, 279-284 Allen, Ethan, 63, 70 Amsterdam, Fort, 37 André, Major, 156 Andros, Edmund, Royal Governor of Mass., 29, 107 Annapolis Royal, 2, 84-92 Arnold, Benedict, 64, 82; his treason, 154 et seq., 169, 171, 238 Atares Castle, Havana, 206 Baltimore, Fort at, 180-189 Battery, The, New York City, 46 Belfast, Me., 90