caption: The image shows a black and white drawing of a four-cylinder engine, which is a type of engine used in the early 20th century. It has a cylindrical shape with a handle on the side and a cylinder head at the top. The engine is composed of four cylinders, each with a different size and shape, and is surrounded by a metal frame. The cylinder head is connected to the engine by a series of wires and cables. The drawing is detailed and shows the various components of the engine, including the pistons, valves, and other components.