Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 223
variedtension of the lips. The bugle is illustrated in Fig. 248. The length of tube isfixed, and the notes producible are the fundamental and about5 overtones. Itscompass is muchsmaller than thatof the French horn.In the cornet,by means ofthree valves a, h, c(Fig. 249), the aircolumn may bedivided… … Fio. 249.—By the valves a, b, c, the air column is divided intodifferent lengths. THE PHONOGRAPH 213 length of the tube. This is done by means of a U-shapedportion, AB (Fig. 250), which can slide with gentle friction
Physics
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