it will receive and transmit the music of a piano, cation have revolutionized commerce. Stocks of goods are and even the turning of the music may be heard. Whistling, now telegraphed for, where formerly orders were given by flute music, and other sounds are transmitted with their ship… … has to pay for its gains. Ultimately society, which includes everybody, is benefited by the use of machinery. A century Fig. 4.-MICRO-TELEPHONE USED AS A TELEPHONE. ago an agricultural laborer, or one of the operative class, lived in one or two rooms, with no sanitary comforts, no This instrument,…
Plow · Patented · Patents · Improved · Plows · Scientific American · Labor · French plow · American plows · American export · Large number · Export edition · India rubber · Small quantity · Years ago · American association
Internet Archive · Public domain (published before 1931). Free to use for anything.
