the Supplement. amount of power with one-halt the Price for the Supplement for the United States and BOSTON. WASHINGTON. DENVER. SAN FRANCISCO. water required by any other. Evidence UNTILE MACHINERY of unquestioned superiority afford- Canada, $5.00 a year; or one copy of the Scientific Am- A. G.… … This Company owns the Letters Patent MUNN & CO., Publishers, pranted to Alexander Graham Bell, March 361 Broadway, New York. 7th, 1876, No. 174,465, and January 30th, GENERAL ELECTRIC CO. 1877, No. 186.787. The transmission of Speech by all known forms of Electric Speaking Telephones in-…
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