Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 415
that sound. Tin is more fusible than lead; it melts at 4-10°. It is very volatile, and bums in openfire, forming oxide of tin, or putty of tin. The most extensive use of tin is in the manufacture of tinplate, for which purpose a very pure tin is required; it is further employed for making pewter,… … MICROMETER. 400 first concentiated by stamping and wasliinfj, which is so mucli the more easy as tin ores are of a hi^hspecific gravity, ahnost equal to galena. The roasting is invariably performed in a reverberatory fur-nace, ■which is a tedious operation, and requires from 18 to 20 hours work for…
Mechanical engineering · Mechanics · Engineering
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