Elements of chemistry : including the applications of the science in the arts . vapour of water in vacuo (Regnault). Temperature. Tension in Millimeters and Englishinches of Mercury. Centig. —30° —25° —20° —15° —10° 14° —5° 23° 0°5°10°15°20°25°30°35°60°85° 100° Fahr. Millimeters. English Inches. ... —22° 0-365 00144 ... —13° 0-553 0-0218 ... —4° 0-841 0-0331 —5° 1-284 0-0500 1-963 0-0818 3004 01233 4-600 01811 6-534 0-2573 9-165 0-3608 12-699 0-5000 ? 68° 17-391 00847 . 77° 23-550 0-9272 . 86° 31-548 1-2421 • 95° 41-827 i-6468 140° 148-791 185° 433-041 212° 760-000 29-9220 32°41°
Elements of chemistry : including the applications of the science in the arts . vapour of water in vacuo (Regnault). Temperature. Tension in Millimeters and Englishinches of Mercury. Centig. —30° —25° —20° —15° —10° 14° —5° 23° 0°5°10°15°20°25°30°35°60°85° 100° Fahr. Millimeters. English Inches. ... —22° 0-365 00144 ... —13° 0-553 0-0218 ... —4° 0-841 0-0331 —5° 1-284 0-0500 1-963 0-0818 3004 01233 4-600 01811 6-534 0-2573 9-165 0-3608 12-699 0-5000 ? 68° 17-391 00847 . 77° 23-550 0-9272 . 86° 31-548 1-2421 • 95° 41-827 i-6468 140° 148-791 185° 433-041 212° 760-000 29-9220 32°41°50°59° The vapours of other liquids increase in density and elastic force with the tcm-. VAPORIZATION. 75 perature, as well as the vapour of water; but each vapour appears to follow a rateof progression peculiar to The assumption of latent heat by such vapours is evinced in some processes forproducing cold. Water may be frozen by the evaporation of ether in the air-pump,and a cold produced of 55 degrees under the zero of Fahrenheit by the evaporationof that fluid. The ether vapour derives its store of latent heat from the remainingfluid and contiguous bodies, which being robbed of their heat, suffer a great refri-geration. To sustain the evaporation of this fluid, it is necessary to withdraw thevapour as it is produced by continual pumping. The volatile liquid, sulphuret ofcarbon, substituted for ether, produces even greater effects. On the same principle is founded Leslies elegant process for the freezing of waterby its own evaporation, within the exhausted receiver of an air-pump, the evapora-tion being kept up by the absorbent power of sulphuric acid. (Supp. E
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Keywords: ., bookcentury1800, bookdecade1850, bookpublisherphila, bookyear1853
