Soo, Chung Ling, 1861-1918, Harry Houdini Collection (Library of Congress) DLC · New York City : Munn & Company · leaf 46
ITING. 33 There is still another double slate used with hingesand padlock. (Fig. 12.) One of the ends of the wooden frame of one slateis fastened securely to its slate, which is made toslide out completely from the groove in the frame.This allows the insides of both slates to be writtenupon. After… … Fig. 12.—The Sliding Trick Slates. out, and write upon the inside of the stationary slate,and then reverse the slates, which will bring theinside of the movable slate into view. Write on thatand then close the slate. I have seen a medium use the double or folding-slate and get rid of the false flap…
Spiritualism · Magic tricks
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