A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams . bottle about one-fourth with the Now, as one volume of hydrogen takes half asolution of nitrous gas, in liquid sulphate of volume of oxygen to form water, nitrous oxideiron, or with liquid sulphate of lime, and agitate must consist of two volumes of nitrogen and oneit with the air that fills the rest of the bottle, volume of oxygen ; these three volumes
A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams . bottle about one-fourth with the Now, as one volume of hydrogen takes half asolution of nitrous gas, in liquid sulphate of volume of oxygen to form water, nitrous oxideiron, or with liquid sulphate of lime, and agitate must consist of two volumes of nitrogen and oneit with the air that fills the rest of the bottle, volume of oxygen ; these three volumes being soDuring the agitation the thumb must be firmly condensed, in consequence of chemical union,placed over the mouth of the bottle, and when as only to fill the space of two volumes. Theremoved the mouth of the bottle must be im- specific gravity of nitrogen, compared withmersed in a cup-full of the same solution, which oxygen, is as 13 to 15. Nitrous oxide thereforewill supply the place of the absorbed air. The consists of agitation and admission of fluid must be re- 13 Nitrogen newed alternately, so long as any absorption 7*5 Oxygen takes place. 373. Various attempts have been made, but Number for nitrous oxide 20-5 CHEMISTRY 395. Or, Brande. For an account of the extraordinary propertiesof this gas, when taken into the lungs, consultResearches, Chemical and Philosophical, chieflyconcerning nitrous oxide, extracts of which willbe found in the article Am, in this Encyclo-paedia. 377. Nitric Oxide, Nit?*ous Gas, or Deutoxideof Nitrogen.—This was discovered by Hales(see part first), but its properties were first dis-tinctly investigated by Dr. Priestley, under thedenomination of nitrous air. Deutoxide of ni-trogen is its most appropriate appellation, but itis now very generally known by the name of ni-trous gas. 378. This gas may be obtained by pouringnitric acid upon copper filings. The copper isthus made to unite with part of the oxygen ofthe nitric acid, and from this lo
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