112 ROYAL SOCIETY OF CANADA 









Nitrobenzene | Specific Heat Cal. 
110°78 grams | 0°457 612 
288°8 ss | 415 1090 
653 se | -379 1629 
3580 a | 348 2851 
6100 se 345 3075 
9204 ee 342 3156 
18328 < *341 3330 
Phenetol Specific Heat Cal. 
89°08 grams 0°537 409 
7397 os "445 1973 
14600 ss *433 2300 

From these tables, and still more from the curves in which the 
calories are plotted as ordinates and the grams of solvent as abscissæ, 
it is evident that the heat of solution of alcohol in benzene, although 
nearly the same, is not identical with that in toluene. Still the 
curves lie very close together and run nearly parallel throughout their 
entire length. Whether the final value at infinite dilution is the 
same for both or not is, of course, doubtful. If its cause is solely 
disassociation of the molecular aggregates of alcohol it ought to be 
so, but a comparison of these results with those for nitrobenzene, and 
especially phenetol, make this conclusion improbable. The curve 
for nitrobenzene shows that the maximum value has been almost 
reached, and it is much lower than those for benzene and toluene, 
while at the greatest dilution reached with phenetol it is only about 
half the value of the latter. Further experiments: with other sol- 
vents and solutes are in progress. 
Ee 
