Q allium

The rnhslance is lighter than water.—A sufficient bulk of some heavy substance, whose sp. gr. is known, is attached to it and the same method followed, the loss of weight of the heavy sub- stance being subtracted from the total loss. Example  

Wood with lead attached w eighs in water. 5.9395 

L6ss of weight of lead in water (determined as above) 0.7903 

The substance is soluble in or decomposable by water.—Its specific gravity, referred to some liquid not capable of acting on it. Is determined, using that liquid as water is used in the ease of insoluble substances. The sp. gr. so obtained, multiplied by that of the liquid used, is the sp. gr. sought. Example  

Liquids.—The sp. gr. of liquids is determined by the specific cavity balance, by the specific gravity bottle, sometimes called pionometer, or by the spindle or hydrometer. 

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Zou Z-M, Yu D-Q, Cong P-Z (2001) A Steroidal Saponin from the Seeds of Allium tuberosum. Phytochemistry 57 1219 

You WC, Blot WJ, Chang YS, Ershow AG, Yang ZT, An Q, Henderson B, Xu WG, Fraumeni JF and Wang TG. 1989. Allium vegetables and reduced risk of stomach cancer. J Natl Cancer Inst 81 162-164. 

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