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Scientific American, Vol. 56, No. 6 (February 1887) (1887)

leaf 3

An illustration from Scientific American, Vol. 56, No. 6 (February 1887), 1887, leaf 3
s stand, an apparatus, which passes a shaft. One face of the disk is formed ent, the means have been of the most elementary char- D, which is a reproduction, on a small scale, of the one with cutting teeth, while the hub of the shaft upon acter. The leaders of the choruses in the side scenes… … Fig. 3,-MEQHANISX OF THE BATON, Fig. a.-ELECTBIC MUSIC BATON. Hg. 1,-LEADEB'S STAND. ©1887 SCIENTIFIC AMERICAN, INC.

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