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 765
tal rod is slid out till justthirty inches of it are beyond thebox. The box is now disposed sothat the beam is reflected from theupright rod to the mirror on thehorizontal rod, and thence to thewall, or a screen at S, where it ap-pears as a bright spot. If the up- VIBRATING RODS 756 VIBRATING RODS… … Vibrating Rods—Fig, 2.
Games · Sports · Card games
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