Zoetrope strip entitled 'Leap Frog', Clarke's Wheel of Life No. 2 showing a duck leapfrogging over a fish. Published by H G Clarke and Co, Garrick Street, Covent Garden, London, c. 1868.

A zoetrope strip is a strip of paper with a sequence of printed drawings representing a scene in motion which sits inside a the drum of a zoetrope. When the drum is rotated, the images provide a loop of continuous motion when viewed through the slits in the side.