The reality of psychic phenomena : raps, levitations, etc. (1916)
Crawford, W. J. (William Jackson), 1880-1920, Harry Houdini Collection (Library of Congress) DLC · London : John M. Watkins · leaf 194
thatthe various motions given to it were more orless those I have dealt with already. This experiment of the movement of thetrumpet, the waving to and fro in the air keeping A CANTILEVER THEORY 177 time to a tune, and the motions described aboveabout the ledge of the table may be interestingto… … Fig. 35, be made on request almost as light as a featheror so heavy that it cannot be lifted. Now, it has been shown (Chapter VII, Ex-periments 45, 47, etc.) that when a compres-sion balance is on the floor below the table, if,say, 30 lb. is the normal vertical reaction forsteady levitation, this…
Parapsychology · Spiritualism
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