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Scientific amusements (1890)

Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 322

An illustration from Scientific amusements, 1890, leaf 322
thickness ! Aqua-regia, a mixture of hydro-chloric and nitricacids, is used to dissolve gold, though free chlorine, orselenic acid individually, will dissolve it. Faraday mademany experiments as to the relation of gold to light.{See Phil. Trans., 1857, p. 145.) The various uses ofgold are so well… … Native gold. process is that now in use, by which the gold precipitateson the article to be plated. We have already described the process of electro-platingin the case of silvered articles, and we need only mentionthat electro-gilding is performed very much in the sameway. But gilding is also…

Scientific recreations

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