Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 152
to place his hands over his ears and passabove the hands around his head a cord in the manner MECHANICAL TOYS, ETC. 135 shown in the illustration below (Fig. 106). If you rubthe string lightly between the finger and thumb, drawingthe hand along the cord, the subject will hear a loudrolling as of… … Fig. loS.—The Rolling of Thunder Imitated. by so doing it will be possible to prolong the experimentfor some time. If you grasp the string with the nails and draw thehand back by jerks you will produce short sharp peals ofthunder, which can be changed into rolling peals at willby continuous…
Scientific recreations
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