The Making of America, Volume 7

Alfred Vail alternating current American apparatus application astronomer automatic cent century chemical chemistry chemists constructed cost cylinder dental device direct current discovery dynamo early electric current electric lighting electrolytic energy England established Europe experiments fact factory facturing graduated hand Hewitt horsepower idea important improvements incandescent incandescent lamp inches increase industry institution interest invention inventor investigation iron known labor lamp large number lock stitch machinery magnet manufacture mechanical ment methods Morse motors nature needle Niagara Niagara Falls observatory operation ovariotomy patent office Philadelphia pins plant possible practical Professor progress railway revolutions per minute scientific sewing machine shoes steam engine steel stitch success surgery telegraph telephone tion to-day transmission turbine typewriter United utilized vibration watch water power wheel wire wood pulp York