that a living being mov-ing at any gait whatever has occupied in space at a knownseries of instants. Let us suppose, in fact, that a photographic apparatus beset up on the road which is being traversed by a walker,and that we take the first image in a very short space oftime. If the plate were to… … THE WHITE-FOOTED MOUSE, OB DEER MOUSE. indicate all the displacements that had occurred at the sec-ond instant. By multiplying the images in this way at veryshort intervals, we should obtain a succession of the phasesof locomotion with perfect authenticity. Now, in order to keep the photographic…
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