Part II. On Aqueous Solutions. rire 
Ferrous Sulphate Solutions. 
x (Calc.) x (Cale.) 
Tempr. x (Exp.) =A/3¥+B| =x, (1-«t) 
273+ 2°3 14:24 x 10° = ee 
43°9 ; 12°57 12°54 12°71 
80°3 11:38 seas eeu 
2734+ 3-2 10:43 a =a 
15:0 10°04 10-037 10-11 
54:0 8:93 8°95 9:06 
80°8 8°34 — — 
273+ 2:4 6:08 hts ae 
44°2 5:28 5-195 5285 
80:1 4-60 a ae 
273+ 2-9 266 == = 
44°8 + 0°305 2°38 2°35 2°38 
Sem 2°14 — — 
Ferric Nitrate Solutions. 
Conen. Tempr. A.108 B .106 x (Exp.) Aan ee 
: 273+ 3-2 21:28x10- | — ae 
0-94 44-9 | 5934-9 | — 0-161 | 18°70 18°51 18°8 
| 83°3 16°46 — _- 
273+ 2:0 10°47 — _ 
0°48 44°3 | 2941°5 | —0°226 9:14 9-044 9-20 
83:7 8:02 — -—— 
ment between the numbers in the sixth column and the 
experimental numbers, particularly with reference to the weaker 
solutions. There are a few exceptions to this statement, chief 
among which are the susceptibilities of a 1°76 normal solution 
of ferric chloride at temperatures of 53°C. and 718°C. These 
values are too high, but they are not so high as the corresponding 
values deduced from the linear relation, and it is possible that the 
irregularity is due to experimental errors in the measurement of 
temperature. 
It is to be observed that the linear relation takes the variation 
of the diamagnetic susceptibility of water into account, and it is 
