Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 265
s the hardest of all substances, the mostvaluable of gems, and the purest condition in which carbonappears. 9- CHEMISTRY. black-lead, and isIt crystallizes andIn Cumberland it is Graphite (Plumbago) is termedthe next purest form of carbon,belongs to the primitive formations,dug up and used to make… … Coke ovens. prepared in air-tight ovens, so that no oxygen can enterand burn the wood thus treated. Coke is the result ofthe same process applied to coal. The gas manufactoriesare the chief depots for this article, and it is used inlocomotive engines. The various smokeless coals andprepared fuels,…
Scientific recreations
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