1869] THE MARCH OF INDUSTRY 341
Charles F. Brush.
The first train pierced the Hoosac Tunnel, in Western Massachusetts, February 9, 1875, completing another artery between East and West. The tunnel passed through the Hoosac Mountain, a distance of four miles and three-quarters, and had been in process of boring, though not continuously, about fifteen years.
342 THE CEMENTED UNION [1875
Moses G. Farmer.
The lighting of large spaces by electricity in a profitable manner may be dated from 1875. The possibility of producing a brilliant light with this fluid had been well known to physicists ever since Sir Humphry Davy's experiments in 1813, but no method of generating the electricity cheaply had hitherto been invented. Utilizing among others the inventions of Dr. C. W. Siemens, Mr. Charles G. Brush, of Cleveland, 0., gave to the world in 1875 his remarkably efficient dynamo or generator, and from that time the illumination of streets and squares by electricity began to be somewhat common.
343
Thomas A. Edison.
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