This is a useful book, and timely. In 225 pages T. C. Mendenhall tells the story of the successive inventions and discoveries which have led to the present widespread and every-day use of electricity in the form of lights, telegraphs, telephones, cables, motors. He gives an idea of the place and service of each helper in the electric march,—Volta, Galvani, Faraday, Morse, Franklin, Edison, Dolbeare, Bell, and others. The facts are set forth clearly and simply, so that the unscientific inquirer need not err therein, and the pictures make the text all the more intelligible.
Published by Houghton, Mifflin & Co.
