on some of the leading doctrines of caloric , &c. 365 
Table V. 
Elastic force of the vapour of alcohol compared with the ratios. 
Temp. 
Calculat. 
Observed. 
Temp. 
Calculat. 
Observed. 
Temp. 
Calculat. 
Observed.! 
250° 
130.24 
132.3 
170° 
28.3 
28.3 
90° 
3 - 4 * 
3 - 4 ° 1 
240 
111. 13 
u 1.24 
160 
22.46 
22.6 
80 
2.52 
2 -45 
230 
93-94 
94.1 
150 
1 7 7 
18.0 
70 
s.8 S 
1.76 
220 
78.67 
78.5 
140 
13-8 
13-9 
60 
>•35 
1.23 
210 
65.29 
65.0 
130 
10.65 
10.6 
50 
0.97 
0.86 
200 
S 3-69 
53 ° 
120 
8.16 
8.10 
4 ° 
0.69 
0.56 
190 
43 76 
43-2 
no 
6.2 
6.00 
30 
0.49 
0.38 
180 
35-35 
34-73 
ICO 
1 4-67 
4 - 5 ° 
7^=22. 4 6 .*. 28.3 x 1.26 — .on = 35-35 
28.3 X 1.26 — .oil X 1.26 — .022 “ 43.76 &c. 
The correspondence here exhibited between the observed 
and calculated elasticities is remarkable ; nor does the differ- 
ence ever exceed what would be produced by an error of i° 
in the construction or reading off of the thermometer. This 
may fairly be deemed the limit of accuracy in such an 
experiment. 
Oil of turpentine is regulated by the constant ratio 1.122, 
which converts any elastic force into that io° above or below, 
multiplying as usual in the former, and dividing in the latter 
case. For petroleum the ratio is 1.14; it is also constant 
The following table exhibits a comparative view of theory 
and experiment. 
