OF THE SYSTEM XArHTHALENE-l'HENOL. 



21 



Tlie hypothetical melting point of (CoHuO);^ will then have the 

 value 



1\ = 319.7-1 



according to equation (18 a). 



With these values of ,Cl and %, x was calculated by equa- 

 tion (Ifj). The result of the calculation is given in the follow- 



ing table. 



TABLE 5. 



The fusion curve of i)heuül culculated. 



Here the agreement is not so good as in the case of the 

 fusion curve of naphthalene. 



The fusion curves of naphthalene and phenol are reproduced 

 in the accompanying plate. The experimental points are dis- 

 tinguished by circles. The calculated curves are drawn in dotted 

 lines. 



The coordinates of the eutectic point seem to be about 



r = 302.7 0^ = 0.157. 



6. Conclusions. 



As is to be seen from Table o and the phite the fusion 

 curve of naphthalene can be represented with tolerable approxima- 



