The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 166
the French physicistRegnault, two connecting ver-tical tubes of glass (Fig. 136)are filled with the liquid to betested. One of these is packedwith ice, while the other is sur-rounded with steam. The dif-ference in the height of thetwo columns affords a measureof the relative density of theliquid… … Fig. 136.
Physics
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