Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 296
9 (KNO3), is a very important salt. It is found in the EastIndies. It is a constituent of gunpowder, which consistsof seventy-five parts of nitre, fifteen of charcoal, and tenof sulphur. The hydrated oxide of potassium, or causticpotash (obtained from the carbonate), is much used insoap… … Preparation of potassium. potash (for soft soap), with oil or tallow. Yellow soap hasturpentine, and occasionally palm oil, added. Oils andfats combine with metallic oxides, and oxide of lead witholive oil and resin forms the adhesive plaster with whichwe are all familiar vihen the mixture is…
Scientific recreations
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