472 C. E. FAWSITT AND C. H. FISCHER. 



From these results we conclude that these alcohols are 

 associated in solution in cineol. Comparing cineol with 

 other solvents, we find it is somewhat more difficult to 

 carry out determinations with cineol as solvent, than with 

 benzene or water, but we believe that cineol will be found 

 a useful solvent in some cases. 



The latent heat of fusion for cineol is given by the formula 

 L ^ RT 2 

 K x 1000 



where L = latent heat of fusion of 1 gramme of cineol, 

 R = 1 *985, and T = absolute temperature of melting point 

 of cineol = 274° 0. The latent heat of cineol (1 gramme) 

 is therefore 22*2. 



Summary. 



1. Cineol is a hygroscopic substance and the usual freez- 

 ing point given is too low. Cineol purified from dissolved 

 water was found to freeze at 0*9° C. 



2. The freezing point constant for normal solutes in 

 cineol as solvent is 6*7. 



