bes, 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… … field, of Bradford, near Manchester, has a chamber 70 feet THE COKE COLUMNS. duced. The fumes from the niter pot, from the action of long, 35 feet wide, and 35 feet high, with a capacity of 85,750 the oil of vitriol upon the nitrate of soda, consist of nitric it is called 66 acid or oil of vitriol.…
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