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Scientific American, Vol. 37, No. 3 (1877) (1877)
leaf 3
ed, is inserted. Afterwards the pressure is applied in slowly, and the arm is thus permitted gradually to descend Ibs. of nitrate of potash, and 11 Ibs. of gum arabic. The the usual manner, the result being that the pipe emerges until stopped by the piston reaching the end of the cylinder, gum… … © 1877 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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