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Scientific American, Vol. 27, No. 18 (1872) (1872)

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An illustration from Scientific American, Vol. 27, No. 18 (1872), 1872, leaf 0
l explain its Zdllner has ascrived the production of the electric currents ing coupled toa si,gle crank at the center of a crank shaft of the earth to the incandescent molten masses in motion be- which has at its ends a pair of opposite overhung cranks construction. neath the crust which generate… … or without isolation of the re- The platform consists of trans- servoir, According to Beetz's verge timber beams, 15 feet 4 observations, then, no electricity is generated by a stream inches long, 14 inches deep by 12 inches thick, to the ends of exhaust from one pipe and deliver into another.…

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