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Scientific American, Vol. 21, No. 25 (1869) (1869)

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An illustration from Scientific American, Vol. 21, No. 25 (1869), 1869, leaf 0
s, through Test for the Quality of Soap. to its designer, and from its great handiness and the rapidity the boss of which the shaft of the pile to be screwed is To,estimate the quantity of non-saponified fatty matter in with which it performs its work, it will no doubt recommend | passed. The… … by which it is claimed all the air bubbles are got rid of and itself to those having to erect such structures as those on ward to the center line of the next piles, and the operation the metal is rendered homogeneous. It will be slow work, which it is intended to employ it. takes place as before.…

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