Magic; stage illusions and scientific diversions, including trick photography (1897)
Hopkins, Albert A. (Albert Allis), 1869-1939, Evans, Henry Ridgely, b. 1861 · London : Low · leaf 498
nular track covered withblack velvet. It was around this annular track the insect was ma^e to fly. Aneedle stuck in the middle of the disk served as an axis for a revolving beamand its counterbalance. This beam consisted of a straw, and at the end of itwas fixed a light pair of forceps to hold the… … FIG. 27.—MOTIONS OF THE DOJfSAL FIN OF THE SEA-HORSE. The chronophotography of insects by the use of a moving film has beenalso accomplished by means of very ingenious apparatus. In some cases theinsects were held in forceps, and in other cases they were allowed free flight ina cardboard box.…
Magic tricks
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