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Scientific American, Vol. 87, No. 26 (1902) (1902)

leaf 4

An illustration from Scientific American, Vol. 87, No. 26 (1902), 1902, leaf 4
ip of has the advantage of comprising within itself the that few people realize the seriousness of another sheet zinc one-fourth of an inch wide, shaped like an voltaic combination for producing the necessary inverted U, with its two parallel legs about eleven- problem which confronts the… … communicate with the for- upper pole, it sets up a MACHINE FOR MELTING AND REMOVING SNOW. ward end of the furnace, vigorous rotation about it round steel eight inches high are wired into electrical and a forced draft is provided by means of blowers in a direction depending upon which pole is…

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