Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 532
ast two centuries, but none of them to thepresent time consist of anything more intricate than asimple tube with a mouthpiece and bell-shaped orifice. Professor Edison, however, in his researches regardingthe conveyance of sounds, has made numerous and interest- THE MEGAPHONE. ^75 ing experiments.… … The Megaphone. the Megaphone, which may be regarded as a curiosity,considering the effects produced by such simple means.The illustration represents the instrument which is (orwas lately) fixed upon the balcony of Mr. Edisons house.At a mile-and-a-half distant from the house, at a spot 176 SOUND.…
Scientific recreations
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