. Inorganic chemistry . with more advantage under suchbodies as sulphate and carbonate of calcium, carbonic acid,hydrosulphuric acid, &c., which impregnate many naturalwaters, and give them peculiar properties. 290. Water is obtained chemical purposes by dis-tilling it in a copper still provided with a condenser. Instead of a still, a glass retort maybe used (fig. 24), the neck ofwhich passes into a receiver,which is kept cool by placingit in a basin of cold water, orby surrounding it with cloth?or bibulous paper kept wetby a stream of water. Pure?^^ ^ water is composed of two parts o
. Inorganic chemistry . with more advantage under suchbodies as sulphate and carbonate of calcium, carbonic acid,hydrosulphuric acid, &c., which impregnate many naturalwaters, and give them peculiar properties. 290. Water is obtained chemical purposes by dis-tilling it in a copper still provided with a condenser. Instead of a still, a glass retort maybe used (fig. 24), the neck ofwhich passes into a receiver,which is kept cool by placingit in a basin of cold water, orby surrounding it with cloth?or bibulous paper kept wetby a stream of water. Pure?^^ ^ water is composed of two parts of hydrogen united with sixteen parts of oxygen by weight. 291. Another form of apparatus for the distillation of purewater on the small scale, is the Liebigs condenser (fig. 25),which consists of a flask or retort, A, into which the impurewater is placed, and is heated. The steam rises, and passesthrough the tube, BB, which is surrounded by an outer tube,CC, between which and the inner tube a stream of cold water. Inorganic Chemistry. 97 is allowed to pass from a reservoir above. The steam is thus
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