ON THE THERMAL PROPERTIES OF ALCOHOL. 
143 
temperature. Three sets of experiments were made. In the first too large an 
amount of alcohol was taken to enable the vapour to acquire normal density, even 
with the largest volume which could be given. The volume of the liquid was there¬ 
fore measured at 220° and 225°, and its weight was calculated from the data obtained, 
and from the determinations of the specific gravity of alcohol which have already 
been described. In the second and third series the density was normal under the 
greatest volumes given, for the product of pressure into volume remained constant 
during change of volume. 
Series I. 
Weight of Substance. 
Volume at 220° . . . 
. . . 0-04323 cc. 
Sp. Gr. 
. . . 0-4958. 
W eight. 
0"02143 gram. 
Volume at 225° . 
0"04514 cc. 
Sp. Gr. 
. . . 0-4775. 
Weight...... 
T. 
Volume. 
Sp. vol. 
(vol. of 1 grm.) 
P. 
P. V. 
Vapour density. 
220 
0-8S473 
41-27 
mms. 
14,181 
12,548 
26-23 
0-84773 
39-54 
14,714 
12,476 
26-39 
5 J 
0-81051 
37-80 
15,238 
12,352 
26-66 
j) 
0-77379 
36-09 
15,869 
12,278 
26-81 
) 5 
0-73719 
34-38 
16,505 
12,170 
2705 
0-70211 
32-75 
17,188 
12,069 
27-27 
r 
0-66350 
30-95 
17,958 
11,917 
27-63 
55 
0-62618 
29-21 
18,776 
11,757 
28-00 
0-58901 
27-47 
19,670 
11,585 
28-42 
55 
0-55175 
25-73 
20,635 
11,387 
28-91 
0-51441 
23-99 
21,679 
11,152 
29-53 
0-47697 
22-25 
22,813 
10,882 
30-26 
0-43953 
20-50 
24,140 
10,610 
31-04 
55 
0-41098 
18-75 
25,560 
10,275 
32-06 
55 
0-36433 
16-99 
27,004 
9,840 
33-48 
55 
0-32709 
15-26 
28,656 
9,372 
35-14 
55 
0-30880 
14-40 
29,408 
9,080 
37-29 
55 
0-29107 
13-57 
30,278 
8,813 
37-37 
55 
0-27268 
12-72 
31,182 
8,503 
38-73 
0-26151 
12-20 
31,861 
8,332 
39-53 
55 
0-25140 
11-85 
32,153 
8,170 
40-31 
55 
0-24668 
11-51 
32,162 
7,934 
Liquid present. 
55 
0-23549 
10-98 
32,188 
7,580 
Liquid present. 
55 
0-21687 
10-11 
32,183 
6,979 
Liquid present. 
