Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 121
chit sinks in distilled water. The intermediate readings givedirectly the percentage of alcohol. The lactometer is a hydrometer graduated with specialreference to milk, and is used by official inspectors. Otherhydrometers, such as Baumes, are graduated empirically—that is, without direct reference… … Hydrometers of constant volume. PRESSURE IN LIQUIDS 103 they are lighter they must be weighted with some solid ofknown specific gravity and the calculation made accord-ingly. In case they dissolve in water, another liquid inwhich they will not dissolve must be used and the neces-sary correction…
Physics
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