Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 696
f the gas by the weight of the same volume of dry air taken at thesame temperature and under the same pressure. This ratio is, strictlyspeaking, the specific gravity only when the gas obeys exactly the law ofMariotte, and has the same coefficient of expansion as air; but it is, nev-ertheless, in… … Fjg. 456. ume of this flask should be about 200 or 300 cubic centimetres, and theneck, a, thickened before the blowpipe, should be drawn out so as to havean aperture of the thickness of a straw, into which a glass stopper isground air-tight by means of emery and turpentine. Through this neck,which…
Matter · Heat
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