Chemistry and Physics. 265 
The second part treats of the elastic forces of the vapors of saline 
. Solutions and of their application to the study of different phenomena 
of molecular physics and chemistry. 
_ third treats of the phenomena of the vaporization of liquids in 
oe 
The fourth of _ ig of experiments on the elastic forces of va- 
pors furnished in vacuo by volatile liquids displaced or superposed. 
: The fifth mohntiog ve result o eriments undertaken to decide 
\ whether the tension of a vapor in vacuo yslepend or not on the solid or 
liquid state of the body which furnishes it. 
The methods of observation employed*to determine the elastic forces 
of vapors in vacuo are the same as those which t e author used 
ia . 
, , ether, bisulphid of carbon, chloroform and oil 
of turpentine, for ev ery 10 de egrees Centigrade. Thes et Shien 
in the following table, the tension being expressed in millim 
Alcohol. Ether. _—_Bisulph. of carbon. Chloroform. easiest 
19 mena 
—21° 31 see. 
' —20 3:3 69-2 Laan ae = 
q +20 6°50 113-2 ies see 
q 1273 182:3 1278 oe 21 
; 10 24-08 2865 199°3 1304 2°3 
7 20 44:00 4348 298-2 190°2 43 
f 30 78-4 6370 4346 2761 
40 134-1 6 6175 364-0 11-2 
50 2203 12680 852-7 5243 iis 
60 850-0 17303 11626 4380 269 
70 539-2 23095 1549-0 9762 41-9 
80 8128 2030°5 1367°8 61-2 
90 1190-4 3899-0 26231 18115 91:0 
100 1685-0 4920-4 $321°3 23546 134-9 
110 2351°8 6249-0 41863 3020°4 1873 
‘ 120 32078 a 51211 3818-0 257-0 
130 4331-2 Bert 62606 47210 3470 
140 5637°7 mcs ts se 462°3 
15 7257-8 te — — 045 
152 46173 chen aig — cee 
160 ne Sg isto —— T1T2 
' 170 oe fe ae. 989°0 
e fe, remarks that these results were obtained partly by the 
1e re 
om mically pure. 
for the el astic force of the vapor x aps 
gives an extremely delicate method of judging of the Cae a of 
_ @ Volatile substa author found it par to obtain a eecieny pure 
ee Wal arr, SoM Search 18 
