American inventions and inventors . on Alexander was born inEdinburgh in 1847 and was educated atthe University of Edinburgh. He re-moved to London when he was twentyyears of age and was for a time in theUniversity there. Three years later hewent to Canada with his father, and atthe age of twenty-five took up his res-idence in the United States, and be-came professor of vocal physiology inBoston University. He had been inthis country but three years when hemade his great invention, and its com-plete success gave him immense wealth. Later he inventedthe photophone, in which a vibratory beam of
American inventions and inventors . on Alexander was born inEdinburgh in 1847 and was educated atthe University of Edinburgh. He re-moved to London when he was twentyyears of age and was for a time in theUniversity there. Three years later hewent to Canada with his father, and atthe age of twenty-five took up his res-idence in the United States, and be-came professor of vocal physiology inBoston University. He had been inthis country but three years when hemade his great invention, and its com-plete success gave him immense wealth. 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 present homeis in Washington. Within ten years the art of telephoning has rapidly de-veloped. This has stimulated inventions and brought intouse a vast number of special contrivances for local and long-. 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 TelephoneCompany. The telephone lines at present in the UnitedStates would aggregate a distance of more than six hundredthousand miles, and there are more than half a million in-struments in our country alone. The longest telephone lineextends from Portland, Maine, via Boston, New York, and Chicago, to Milwaukee, adistance of more than thir-teen hundred miles. Let us consider for amoment the wonders of thismarvelous invention, ascompared with another noless marvelous in its way. In 1867 Anson Burlin-game was appointed by theChinese Government specialenvoy to the United Statesand the great Europeangovernments, with powerto frame treaties of friend-ship with t
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