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Scientific American, Vol. 46, No. 17 (April 1882) (1882)

leaf 4

An illustration from Scientific American, Vol. 46, No. 17 (April 1882), 1882, leaf 4
most convenient position. The curved speak- the wires were working better, but on those running West less heated. The lecturer formed an artificial cloud of the ing tube—which is also used for hearing—terminates flush and North the interruption still continued. The interrup- kind, which was shown… … but simply absorbed by an These instruments are nice- BENNETT'S ACOUSTIC TELEPHONE. adjacent fork. In like man- ly finished, the mouth-piece, ner the yellow ray in the solar spectrum was absorbed by crank, and other parts being nickel plated. This telephone, the Atlantic cables was also obstructed.…

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