On an Ex-perimental Modification of van der Wards' s Equation. 125 
Table I. 
a=f (T) : Isopentane. 
A. 
B. 
a 
T 
a X 10-^^ 
logio«. 
logea. 
283 
48-37 
4493 
7457 
2-1103 
6-3244 
14-5625 
293 
44-59 
4066 
7030 
2-0598 
6-3138 
14-5381 
303 
41-07 
3674 
6638 
2-0113 
6-3035 
14-5143 
313 
38-00 
3310 
6274 
1-9637 
6-2931 
14-4904 
323 
35-30 
2970 
5934 
1-9167 
6-2826 
14-4662 
333 
33-11 
2653 
5617 
1-8705 
6-2720 
14-4418 
343 
30-76 
2357 
5321 
1-8251 
6-2613 
14-4172 
353 
28-92 
2079 
5043 
1-7802 
6-2505 
14-3923 
363 
26-87 
1821 
4785 
1-7369 
6-2398 
14-3677 
373 
25-11 
1578 
4542 
1-6942 
6-2290 
14-3428 
383 
23-62 
1351 
4315 
1-6527 
6-2182 
14-3179 
393 
22-09 
1137 
4101 
1-6117 
6-2073 
14-2928 
403 
20-74 
967 
3901 
1-5721 
6-1965 
14-2680 
413 
19-44 
749 
3713 
1-5335 
6-1857 
14-2431 
423 
18-26 
573 
3537 
1-4962 
6-1750 
14-2185 
433 
17-06 
409 
3373 
1-4605 
6-1645 
14-1943 
443 
15-76 
257 
3221 
1-4269 
6-1544 
14-1710 
449 
14-97 
453 
14-39 
106 
3070 
1-3907 
6-1432 
14-1452 
456 
13-83 

458 
13-40 
459 
13-18 
460 
12-89 
460-4 
12-60 
- 
460-8 
12-38 
0 

2964 
1-3658 
6-1354 
14-1273 
a 
1 
/I 
r 
'^o 450 S£l> a6o ^£,0 /iOX) 420 46o 
