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GROUP X

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Originally appearing in Volume V21, Page 350 of the 1911 Encyclopedia Britannica.
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GROUP X . Carbonic See also:Acid.—Carbonic acid See also:gas, carbonic See also:oxide (CO) and some other irrespirable gases produce their effects practically by asphyxiation. When dissolved in See also:water, however, carbonic acid gas is a See also:gentle stimulant to the mouth, See also:stomach and bowel, the mixture being absorbed more rapidly than See also:plain water; hence its greater value in assuaging thirst. Nitrous oxide (laughing gas) was at one See also:time believed to See also:act simply by cutting off the See also:supply of See also:oxygen to the tissues, but it also has a specific effect in producing See also:paralysis of certain parts of the central See also:nervous See also:system, and hence Its value as an anaesthetic; when given in small amounts mixed with See also:air it produces a See also:condition of exhilaration.

End of Article: GROUP X

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