dT 



1173 



assumes the value zero for that definite value of x 



It appears at the same time from these figures that when the 

 temperature of the three phase equilibrium lies between the melting- 

 point temperatures of the pseudo-components, one of the metastably 

 |)roduced meltingpoint lines must possess a maximum temperature. 



When in conclusion we consider the case that the $-,i"-lines for 

 solid suddenly terminate in the ?, .i'-ügures, we tiud what follows 

 for the corresponding 2\x4\^\\yq^. 



We have treated here systems of two pseudo-components a and 

 /i, but it is clear, that the same holds also for any other binary 

 system. 



Amsterdam, 20 March 1914. 



Anorg. Chem. Laboratory of the University. 



{To be continued.) 



