The young folk's cyclopædia of games and sports ; (1899)
Champlin, John Denison, 1834-1915, Bostwick, Arthur Elmore, 1860-1942, joint author · New York, H. Holt and company · leaf 676
round the disk. The sandwill gather into two lines at rightangles, one of which starts from thefinger. The reason is that the disknow vibrates in parts, one part mov-ing up while another is movingdown, and the lines between theseparts have no motion; hence thesand settles on them. By drawingthe bow… … Fig. I. If lycopodium powder (whicn -anbe bought of a druggist) be mixed SOUND FIGURES 668 SOUND FIGURES sound will be. This is because, asstated above, the disk does not vi-brate at the sand-lines, and theparts of the disk on opposite sidesof any line are always moving inopposite directions, one…
Games · Sports · Card games
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