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Scientific American, Vol. 24, No. 8 (1871) (1871)

leaf 4

An illustration from Scientific American, Vol. 24, No. 8 (1871), 1871, leaf 4
the other between rollers and grooved pulleys pressed against of using the gas may have been improved since. The gas application of clectricity. It is the invention of a citizen of the blocks by springs so as to shutoff all way to the water. burns with a pale blue fiame, and imparts no disagreeable… … liausas. [y his communication inclosing the drawing, he Petroleum is tound in the neighborhood in quantity, float- apparatus. ing upon springs and the water of salt wells. It used to be says: A represents the blocks; B is the hexagon-shaped wheel; “You will observe friction (the old enemy) is an…

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