328 is another wing, 75 by 123 feet, three stories high, containing the executive offices and two large public halls. Surmounting the central portion of the building is a fine dome 72 feet in diameter and 235 feet high. The entire edifice is constructed, almost exclusively, of wood, stone, brick and steel, produced by the State of Illinois. THE WORLD’S COLUMBIAN EXPOSITION. turrets, torpedo tubes, nets and booms, anchors, chain cables, davits, awnings, smoke-stacks, a mili- tary mast, etc., together with all appliances for work- ing the same. Near the top of the military masts are shelters for sharpshooters in which are mounted rapid firing guns. The battery consists of four 13-inch breech loading rifles, eight 8-inch rifles, GONDOLA. The contribution of the United States Naval Department is one of the most novel ever seen at any World’s Fair. It is comprised in a structure which, to all outward appearance is one of the newest and most powerful ships of war. This is, however, ‘only an imitation battle-ship, composed of masonry and resting on piling in the lake. It has all the fittings that belong to an actual ship, such as guns, four 6-inch rifles, twenty 6-pounder rapid firing guns, six 1-pound rapid firing guns, two Gatling guns, and six torpedo tubes. These are all placed -and mounted exactly as in a genuine battle-ship. All along the starboard side is a torpedo protection net. The entire structure is 348 feet long and 69 feet 3 inches wide. It is manned by officers and men detailed by the Navy Department, who give