Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 540
which responded to PROFESSOR -BELL. 183 every known sound, and by this he managed to transmitspeech in an articulate manner. In 1876, Professor Graham Bell sent a Telephone tothe Centennial Exhibition at Philadelphia. Mr. Eell,according to the report, managed to produce a variationof strength of… … Bells Telephone (Receiver). of the electro magnet are in circuit with the telegraphwire, and the wire of another electro magnet at thereceiving station. This second magnet has a solid barof iron for core, which is connected at one end, by athick disc of iron, to an iron tube surrounding the coiland…
Scientific recreations
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