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Scientific American, Vol. 30, No. 18 (1874) (1874)

leaf 4

An illustration from Scientific American, Vol. 30, No. 18 (1874), 1874, leaf 4
ng the electricity, in half an hour. The unavoidable confusion which follows | ally prevalent, such inventions are of especial and timely and an arrangement for regulating the light produced by the the occurrence of a sudden disaster renders such means of | importance. current, and projecting it… … are transmitted, by means of a gine room, and kept always charged by means of the pump surrounding the electro-mag- scending to repair the bottom or screw. Tubes pass through | tical trials of the same, are among the most imperative du- nets, so as to increase their magnetism until, bya series of…

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