Narrated history of the evolution of the motion picture, its tools, and important figures. Painting of horse and rider; rider in jockey silks mounted on horse holding device for measuring movement, doctor in lab coat holds bridle; CU of device; pan down to horses hind feet showing wires attached to device; doctor test measuring input device on horse's foot; horse and rider go off at slow gallop; E. J. Marey's tables showing graphed representation of horses gallop; CU of sketch of horse drawn based on the graphs; CU of artist's hand sketching horse's hoof; painting of horses galloping; photographed portrait of Eadweard Muybridge, photographer.