Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 668
y a siphon-tube, from whichthe air has been expelled by hermeti-cally sealing the instrument whenfilled with ether vapor. The bulbA is about half filled with ether,and contains the bulb of a smallthermometer. Moreover, a zone ofthe bulb is gilt, and burnished so thatthe deposition of the dew upon… … Fig. m. 644 CHEMICAL PHYSICS. ether from the muslin, by cooling the bulb B and condensing thevapor of ether which it contains, causes a very rapid evaporationfrom the surface of the liquid in the bulb A. By this means thegilt zone is soon cooled to the dew-point, a deposition of dew indi-cating…
Matter · Heat
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