( 264 ) 



what relation there would have to exist between the equilibria in 

 the pseudo-binary and the unary system to explain the observed 



Fig. 1. 



phenomena; especially because in this way it appears the more 

 clearly how rational the pseudo-ternary view is. 



The 7\Y-rigure, ari'i\'ed at in this way, has been gi\en scliematically 

 in fig. 1. 



The lines //^ and gl^ are the melting-point lines of the monoclinic 

 and the rhombic sulphur, the former of which is made to meet the 

 region of non-miscibility at 111° and 47o S,j., because it was thought 

 that from this concentration of Sy. the point of solidification did not 

 change any more on addition of Su. . 



The same thing has been assumed in this figure, hence the meta- 

 stable melting-point line of the rhombic modification meets the 

 metastable region of non-miscibilitj^ at f/^ . 



As in accordance with the theory mixed crystals had to be assumed, 

 to which also some experimental data point, as I already demon- 



