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 412
ay roll. A drop of mercury placed in thetube completes the toy. AYhen placed on a slightly inclined plane, with thetube parallel with the surface, the mercury rolls to the lower end of the tube,causing that end to preponderate. The lighter end, actuated by gravity, thenmoves forward until it… … FIG. 2.—TUMBLER. The toy shown in Fig. 2 is made upon the principle just described, but theround ends of the figure furnish the rolling surfaces, and a bullet is used forthe weight instead of a globule of mercury, the body being simply a straightpaper tube with convex ends. COLUMBUSS EGG. The…
Magic tricks
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