391 



as observed here depends certainly on the inapplicability of the 

 assninptions which were used in the integration of the Clausius — 

 Clapayron equation. 



In the case of the liquid phase, the observed vapour pressures 



50 



g30 





 40rf 



600 700 



Temperature 

 Fig. 1- 



80(f 



90<f 



H 



400 



50Cf 



600 700 



Temperature 

 Fig. 2. 



800 



90(f 



