Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . iron plates are dipped be-fore tinning. G-rcasc-pol. b. A bath used in the same work, known as aV)ash-pnl. 3. {Founding.) A brass-founders name for a cru-cible. Graphite pots are most generally in use. Potance. (JFatchmaking.) The stud whichforms a step for the lower pivot of a verge. Potanoe-file. A small band-file with paralleland Hat sides. Po-tassi-um. Equiv
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . iron plates are dipped be-fore tinning. G-rcasc-pol. b. A bath used in the same work, known as aV)ash-pnl. 3. {Founding.) A brass-founders name for a cru-cible. Graphite pots are most generally in use. Potance. (JFatchmaking.) The stud whichforms a step for the lower pivot of a verge. Potanoe-file. A small band-file with paralleland Hat sides. Po-tassi-um. Equivalent, ; symbol, K(kalium); .specific gravity, ; , 136°Fall. This metallic base of the alkali potassa wasdiscovered by Sir Humphry Davy in 1807. It is abrilliant, silver-white metal, tarnishes immediatelyon exposure to the atmosphere ; is soft at ordinarytemperatures, brittle at 32° Fah. Its affinity foroxygen is so energetic that water is decomposed bycontact, the liberated hydrogen being inflamed. The salts of potash are very useful in the arts, asingredients in glazes for pottery, fluxes in glass, insoap-making, wasliing, gunpowder, etc., etc. Po-tato-as-sorter. A rolling screen with open Fig.
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