s, with a current of hydro- 4 or 5 inches wide and centration. From the lead pans, the acid is usually run off gen gas and one of atmospheric air. The hydrogen is gen- deep, termed a niter pot. into platinum stills, where it is concentrated until it attains erated in the usual manner, by the action… … duced. The fumes from the niter pot, from the action of long, 35 feet wide, and 35 feethigh, with a capacity of 85,750 the oilof vitriol upon the nitrate of soda, consist of nitric These beautiful white cubic feet. acid, NO;, Butin ‘the chamber this nitric acid yields up England, there is a chamber…
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