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Scientific American, Vol. 12, No. 46 (1857) (1857)

leaf 5

An illustration from Scientific American, Vol. 12, No. 46 (1857), 1857, leaf 5
ning quality being thereby much working over a convex surface than over a or this may be a wood screw placed in the mold the action within it. Italy and Malta do their improved and its value very much increased. level one, but the compression of the wheels to form a pin for the sabot when cast. B… … cently read by C. W. Siemens, of London, again, the powerful mineral poisons of the average. The quantity has been estimated at der, and C is an iron plug fitted in the open- famed for his speculations on the economy of arsenic overcoming the vegetable poison in of 180,000,000 tuns. In other…

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