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Scientific American, Vol. 40, No. 3 (1879) (1879)
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r, combined with soda and made more liable to be destroyed by alkalies. Water or potash, yield 230 to 235 parts of pure soft soap, contain- |in which silk and wool have been washed with this soap con- ing 33°14 per cent of water. When certain adulterants are added in quantities too small to affect… … alkaline; it is then corrosive, and attacks and destroys the i [Continued on page 34.]} —— —aSSSS= > iP FC pry | i “ing SCNCUS: Cera RAP pass | SGD? \h 9% . | SSS ~ SSS THE MANUFACTURE OF LEAD PENCILS. © 1879 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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