Mowry, William Augustus, 1829-1917, Mowry, Arthur May, 1862- joint author · New York, Boston [etc.] Silver, Burdett and company · leaf 290
h. Later he inventedthe photophone, in which a vibratory beam of light issubstituted for a wire in conveying speech. This instrumenthas attracted much attention but has not proved of practicaluse. Professor Bell is a member of various learned societiesand has published many scientific papers. His… … A TELEPHONE. 288 AMERICAN INVENTIONS AND INVENTORS. distance transmission. The principal inventors of these nev:contrivances are Bell, Berliner, Edison, Hughes, Dolbear,Gray, Blake, and Peirce. Nearly all of the telephone business of our country iscarried on under licenses from the American Bell…
Inventions
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