Marshall's Agricultural Hydraulic Gear Tractor Small 320×239 Medium 640×477 Large 1024×763 Download TIFF Original 2400×1789 | (605.6 KB) Description A Marshall's agricultural hydraulic gear tractor. The fuel tank is located on the bottom back of the tractor, while the water tank is under the driver's seat. The back wheel is turned by the engine. Keywords automobile, car, cars, Chassis, engines, internal combustion engine, Marshall's Agricultural Hydraulic Gear Tractor, tractor, tractors Galleries Motor Vehicles Source: Encyclopaedia Britannica (11th ed., vol. 18) (New York, NY: The Encyclopaedia Britannica Company, 1910)