Keywords: Descriptive Zoopraxography Boys Playing Leap-frog Animated 13.gif en Boys Playing Leap-frog Animated by rotating in steps of <sup>1</sup> <sub>13</sub> rotation according to Muybridge's instructions at a frame rate of 10/sec 1893 Descriptive Zoopraxography or the Science of Animal Locomotion made Popular Creator Eadweard Muybridge File Descriptive Zoopraxography Boys Playing Leap-frog jpg<br /> File Descriptive Zoopraxography Boys Playing Leap-frog Animated 12 gif PD-Gutenberg PD-old-100 Descriptive Zoopraxography Eadweard Muybridge animations Animations of people Animated GIF |