Gastein, Badgastein, or Wilbad-Gastein. A village of Austria, 49 miles south of Salzburg. On August 14, 1865, a convention was concluded here between Austria and Prussia, to make arrangements relative to the government of the duchies of Sleswick, Holstein, and Lauenburg, which their combined forces had wrested from Denmark.

Gate. A door of strong planks with iron bars to oppose an enemy. Gates are generally fixed in the middle of the curtain, from whence they are seen and defended by the two flanks of the bastions. They should be covered with a good ravelin, that they may not be seen or enfiladed by the enemy. The palisades and barriers before the gates within the town are often of great use.

Gateshead. A borough in Durham, on the Tyne, opposite Newcastle. At Gatesheadfell, William I. defeated Edgar Atheling in 1068.

Gateway. The passage or opening in which a gate or large door is hung. The gateway being a most important point in all fortified places, is usually protected by various devices. It is flanked by towers with loop-holes, from which assailants may be attacked, and is frequently overhung by a machicolated battlement, from which missiles of every description were poured upon the besiegers.

Gath. One of the five chief cities of the Philistines, was situated on the frontiers of Judah, and was in consequence a place of much importance in the wars between the Philistines and the Israelites. It formed in fact the key of both countries, and was strongly fortified.

Gatling Gun. Is a machine gun, the 1 inch composed of six and the 12 inch of ten rifled barrels of steel, made to revolve around a central axis parallel to their bores, by means of a hand crank. As each barrel comes opposite to the hopper on the left side of the cylinder, a self-primed metal case cartridge falls into a groove of the cartridge-carrier, is pressed into the breech by a plunger, and held there until exploded by the firing-pin. The empty case is withdrawn from the barrel by an extractor attached to the cylinder containing the firing-pin. With each revolution of the crank the 1-inch gun fires once, and the 12-inch gun three times. The 12-inch gun is reduced to caliber .45 inch, in order to use with it the projectile of the breech-loading musket.

Gaucho. One of the native inhabitants of the pampas of La Plata, of Spanish-American descent, celebrated for independence, horsemanship, and rude, uncivilized mode of life.

Gaugamela (now Karmelis). A village in the district of Aturia, in Assyria, the scene of the last and decisive battle between Alexander and Darius Codomannus, 331 B.C., commonly called the battle of Arbela. See [Arbela].

Gauges. In gunnery, are brass rings with handles, to find the diameter of all kinds of shot with expedition. Also instruments of various kind for verifying the dimensions of cannon and projectiles and the various parts of small-arms. Modern small-arms are made on the interchangeable principle, each part being accurately made to gauges. This principle has revolutionized the manufacture of small-arms. It was first introduced at the U. S. armory, at Harper’s Ferry, by Maj. Wade, of the Ordnance Corps.

Gaul, or Gallia. The ancient name of France and Belgium. The natives, termed by the Greeks Galatæ, by the Romans Galli or Celtæ, came originally from Asia, and invading Eastern Europe, were driven westward, and settled in Spain, North Italy, France and Belgium, and the British Isles.