Conductivity and Flucdity of Solutions. A477 
temperatures were carried down below 0° C., and the figures 
for these solutions, which we shall call numbers 9 and 10, are 
here given. It will be seen that the lowest temperature 
reached was —15°20 C. 
Solution 9. 

| Varia- _Concen- Resis- | Sp. Mol. | 







Temp. tion Density. eae Visto ae tance. | Cond. C/F. 
<a | oo a | ts iiss edie, of SS 
15°20 |—0:00 | 1:05V00 | 2-266 “01530 | 65°36 | 1197 50°30 | °768 
0°20 '|—0:00; 1:°05i17 | 2-270 02346 | 42°62 | 1733 | 34:68 | ‘811 
| | | 
a0 10:00) 10527 | 2-272 | -038125.! 32:00 | 2217 |. 27-08. | -847 





Solution 10. 

Resis- | Sp. Mol. 
tance. | Cond. 

Varia- 
Concen- 
tion. 
tration. 
Viscosity | Fluidity. C/E. 
ee ee | 
15°00 |—0-00 | 11530 674 "03256 | 30°71 | 933:2| 21-69 | “706 
0-40 40-04 1:1570 6°76 04913 | 20°35 |1346 | 1499 | °737 
— 715 0°00 1:1584 6°76 06293 | 15°89 | 1676 12504 1) 3798 
Temp. | Density. 






—12:00 |+0:04| 1:1595 677 ‘07441 | 13°44 | 1964 10:26 | -763 
—1450 |—0:00) 1:1599 678 08125 | 12°06 | 2154 934 | -759 






— 15-20 +020 1-1601 | 679: | -0837 | 11-95 | 


In these experiments, the bath was of methylated spirits 
surrounded by a freezing mixture of crushed ice and salt, 
and the bath was kept weil stirred in the ordinary way. 
INscussion of the Results. 
Let us consider the temperature variations of fluidity and 
conductivity, as represented by our ten solutions, or eleven 
if we include the solution of infinite dilution. 
It will be seen at once that the fluidity increases more 
rapidly than the conductivity, the former increasing its value 
sixfold, and the latter fivetold, in being heated through 100° 
from 0° C., and this applies whether the solutions be weak or 
dilute. 
If we represent the results algebraically, we find that both 
the fluidity and conductivity values can be expressed by 
equations of the same form, and that they are proportional to 
the mth power of the temperature measured from a fixed 
point below the 0° C., which is the same for all solutions. 
