612 REGNAULT’S HYGROMETRICAL RESEARCHES. 
Saussure... . 7°73 0°6858 
Id. Apes bam. His 18°95 0°6833 
Clementand Desormes 12°50 0°5311 
Tasos cae 05471 
Atel Gr soniirs. oy S640 9°45 0°6523 
Id. Sgiies “bo sews 15:00 0°6630 
Id. eeronr ert gcwatta 25°00 0°6324 
Id. Sect Pctw ag) 28°34 0°62512 
Mayer iors Aacsnsray: Ay VEBIPS 08012 
Despreta' hii .sot. et 12 R744 0:6767 
Id. Met) nla its 19°31 0°6535 
Gay-Lussac . . . 100:00 0°6235 
Beannep adie vcd peeks 9°50 0°6490 
Schmidt nite Ween aatty LLOOFOO) 0°7220 
Southern . . . . 109°45 0°6479 
Id. i deen t-PA 23 0°6957 
Id. ap oth: sees HABeTS 07095 
Munthe eiuion 2 ee 0:00 08274 
TAs? bye erat in-etine 3°75 0°8469 
Id. 5} ck getare 7°50 0°8836 
Id. SL oS Bee es 8°44 0-8892 
Id. oo gia hs Hlaere 9°38 0:9076 
Id. or ict wat Sora 12°50 0°8662 
Id. a Cd ee he 15:00 0°7957 
Balsall tates RE 0°7186 
Id. Ph eee ee 20:00 0:6594 
Id. Ae ee ee 22°50 0°6940 
Tihs: ye: <Skeiahatia sieQeeee 0-7214 
ks hich a gly was. lig eer 0°7335 
Id. clic Buide s 27°5G 0°7335 
Id. a flora Hines 37°50 0°6501 
Id. 43°75 0°6348 
It is evident that the majority of these results are wholly in- 
correct; and it is sufficient to peruse the processes followed by 
the authors, to perceive immediately that the results obtained 
by most of them are not the least to be depended upon. 
The density of vapour proposed by M. Gay-Lussac, $, has 
been generally adopted. This density differs little from the 
theoretical density ; and it need only be remarked, that it was 
not determined on vapour in the state of saturation, but on va- 
pour at 100° under a weaker pressure than that of 0™'760. 
