What to do and how to do it; the American boys handy book (1920)
Beard, Daniel Carter, 1850-1941 · New York, C. Scribner's sons · leaf 395
y.The horses legs will commence to move as in life, and as eachsuccessive position drawn upon the phantasmoscope is the exact one taken by a trotting horse,the horses in the mirror willall appear to be in actual mo-tion, on a fast trot. If theeye is directed over the mar-gin of the paste-board… … Making the Horses Trot. slot, the figure of a horse is seen for an instant as the open-ing passes the eye, and the impression is retained after theobject is shut off by the intervening portion of the board be-tween the slots until another horse appears through the succeed-ing opening, when an…
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