The Rex Monoplane Company exhibited an all-American monoplane. This machine had a long, graceful fuselage, which carried at its front end the motor and gasoline-tank, the wings and the pilot’s seat, and at its rear the flat, non-lifting tail plane and elevator flaps with the vertical rudder immediately behind them. The landing-gear was quite novel, and consisted of a single skid and two shock-absorbing wheels. These wheels were attached to the fuselage through telescopic tubes having springs inside them to absorb shocks. The axle also strapped to the landing-skid by rubber bands, the whole forming the first flexible and efficient shock-absorbing landing-gear. The main planes had a peculiar reverse curve in them, and were pivoted to a centre upright in the fuselage, thus permitting of warping the whole wing instead of only the tips. ANTOINETTE Harry S. Harkness exhibited the Antoinette monoplane with which he carried the first war-despatch in the United States, on February 7, 1911. This machine was fitted with an 8-cylinder 50 horse-power Antoinette motor and Normale propeller. BALDWIN Captain Thomas S. Baldwin showed the biplane with which he has toured in many parts of the globe. This machine was a cross between an early Farman and a Curtiss. The power-plant consisted of a 60 horse-power 8-cylinder Hall-Scott motor. MULTIPLANE LTD. The Multiplane Limited, of Atchison, Kan., showed a large quadruplane built under the patents of H. W. Jacobs and R. Emerson. The machine was of the headless type, having four main planes in front, with four lifting tail planes in the rear, and an elevator immediately behind the two. The propellers were mounted on the same axis and placed midway behind the main planes, and were driven by leather-covered flat steel belts from two 8-cylinder 80 horse-power staggered V-type air-cooled motors. The machine was designed for weight-carrying, and was fitted with a large cabin having a double row of seats, capable of holding five people comfortably. The landing-chassis consisted of one long centre skid, having two large 48-inch wheels in front, and a single swivelling wheel in the rear. These wheels were not fitted with pneumatic tires, but instead had a broad, flat, strip steel rim. The wing spread was 37 feet; length, 29 feet 8 inches; height, 17 feet. GALLAUDET The Gallaudet Engineering Company exhibited a speed monoplane named the “Bullet.”