Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 86
ng gutta-percha or rub-ber after vulcanization has ledto many attempts to remove thesulphur, the most successful ofwhich is noted under India-Rub-ber. In vulcanizing gutta-percha,when the proportion of sulphur is increased and the heat prolonged, a very hard black substance is produced, which is… … GYROSCOPE. Works for Reference.—See articles Gutta-Percha in Ures Dictionary of Arts and Manufac-tures, and in the American Cyclopaedia. See also Figuiers Merveillee de PIndustrie GYROSCOPE.* A name applied to various instruments designed to illustrate the phenomena ofrotation. The most curious and…
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