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Scientific American, Vol. 4b, No. 6 (February 1861) (1861)

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An illustration from Scientific American, Vol. 4b, No. 6 (February 1861), 1861, leaf 0
which is placed on the top of shells. Those in use in our army are set at an angle of ing the quartz and amalgamating the gold, removes the fortification. 45 degrees, and the range of the shell is varied by al- the pyrites from the particles of the precious metal by An embrasure is the hole or… … tom, but are prevented from being pose. The extent to which the carried along with the rotary mo- rosealine is used may be judged MORRIS' IMPROVED ARASTRAR OR QUARTZ CRUSHER tion of the cylinder by being at- of by the numerous red stock- explode at just about the time that it strikes, by tached to…

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