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 496
e, affordsanother interesting example of aquatic locomotion. The principal propeller ofthis animal is a dorsal fin which vibrates with such rapidity that it is almostinvisible, and has an appearance analogous to that of the branches of a tuningfork in motion. With twenty images per second it is… … FIG. 25.—PjrOTOtHHONOOIl.VnilO APPARATUS. The comatula is habitually fixed to the Ijottoni of the arjuuriuni, just as ajtlant is fixed to the earth by its roots. It therefore m;ikos nothing but vaguemotions of the arm, which it rolls up aiul unrolls; })ut if the animal be excitedby the means of a…
Magic tricks
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