667 



We have assumed in our previous considerations that at least 

 one of tiie variable phases contains all components; we may imagine 

 also, however, that this is not the case. Let us take e.g. the ternary system: 

 A -f- water -j- alcohol, in which ^ is a salt, which is not volatile 

 and which forms a liydrate A . n H^O. The equilibrium E =^ A -\- A 

 .nH^O-\-G\Bi\\Qn ternary, but the variable phase, viz. the gas G, 

 contains only the two components water and alQohol. 



For the contemplation of similar equilibria it is in general easier 

 when we do not use the general formulas (2) [XVII] and (3) [(XVlI)J 

 but the conditions of equilibrium, which are true for the special 

 case. In the communication "Equilibria in teinary systems" XVII 

 I have treated a similar case. 1 shall refer to this in a following 

 communication. 



{To b^ continued) 



Leiden, Inorg. Chem. Lab. 



