Mr Muybridge his instantaneous photographs of animal motion at the Royal Society. 1, A selection of six phases in the stroke of a bird's wing (Cockatoo), illustrating independent action of the primary feathers. 2. A phase in the action of a dancing-girl. 3. A phase occurring in the gallop. 4. A phase of fast trotting. 6. A phase in the crawling of a child 7. A phase in the motion of a sloth clinging to a pole. 8. Phase of the canter; almost identical with figure of Greek sculpture on the freize of the Parthenon 9. Phase of a child running. 10. Phase in the walk of a draught-horse. 11. Phase of leaping, as seen simultaneously from three points of view 25 May 1989