20 



ART. 11. T. YAMAMOTO : THE FUSION CURYES 



other cases the difference is much smaller, being on tlie average 

 only 0.2?-^. But the deviation is somewhat one-sided. 



The experimental data concerning the fusion curve of phenol 

 are given in the following table. The symbols at the head of 

 the table have the same meaning as in Table 1. 



TABLE 4. 



The fusion curve of phenol. 

 Amount of phenol employed .34.079 gramme.'^ 



From the value of ^v at the melting point of phenol 40.39°C. 

 the degree of dissociation of (CüHgO)3 at this temperature was 

 calculated to be 



a = 0.0615. 



The available data on the heat of fusion of phenol are not 

 concordant ; we employ the value determined by Eykmann, 



Q' = 2455 calories, 



from which the hypothetical heat of fusion of (CgH60),3 is calcu- 

 lated by equation (18) to 



Qi = 6275 calories. 



1) Tlie sample of phenol employed in this series of determinations was not tlie same 

 as in other series. The melting point was somewhat lower. 



