Other exhibits by the Goodrich Company are a model spherical balloon, relief throttle-valves perfected by the Goodrich Company, and principally the Grammeter valve, shock-absorber cords, special parachute attachments, fabrics and cloths for aeronautical use, etc. Another feature of the exhibit will be a short motion-picture, showing how the balloons are manufactured. THE GOODYEAR TIRE AND RUBBER COMPANY The Goodyear Tire and Rubber Company of Akron, Ohio, was the most extensive aerostatic exhibit of the show. The outstanding feature of the booth was the dirigible pusher-car, completely equipped, of a type which has many sisters in service. A 35,000-cubic-foot type “R” military kite-balloon is suspended and equipped complete. Attractive models of the twin-engine navy dirigible and a transcontinental passenger dirigible car are on display. These models are complete in every detail, including full set of instruments and controls, lockers, and upholstery. A full-sized dirigible car equipped with dual control, indicating devices, including manometers, tachometers, air-speed indicators, incidence and bank indicator, clock, driven by an 8-cylinder OX-2 Curtiss motor, of the type used on the FC training dirigible, having a cubic capacity of 85,000 feet, form an interesting part of the Goodyear exhibit. Models of “R” type kite-balloon, military free balloons, and of the U dirigible are also on display. GROWTH OF AEROPLANE PLANTS The growth of the aeroplane factories during the war was enormous. The Aeromarine Plane and Motor Corporation, which was located in a small plant at Nutley, N. J., moved to Keyport, N. J., and on a property of 66 acres erected sixteen fireproof buildings, with a total space of 125,000 feet. Most of the work of this plant was done for the navy. Three types of training-machines were produced, 39-A type, a turn-float hydroplane, 39-B, a single-float machine, and Model 40, a flying-boat. The Dayton-Wright Aeroplane plant was incorporated on April 9, 1912, to build aircraft for war purposes. In August, 1917, a contract for 400 training-planes was awarded to the company, and later an order for 5,000 De Havilland 4 battle-planes was received from the government. By November 11, 1918, the 400 training-machines were delivered and 2,700 D.H.4’s, and the 5,000 order was cut to 3,100, which were to be completed. One thousand eight hundred D.H. S-4’s were shipped to France. The three plants were located near Dayton, Ohio. Mr. Orville Wright was the consulting engineer of the company. In addition to the three large plants which the company operated at the South Field Experimental Station, which had a total of 65,000 square feet, 8,000 people were employed by the company.