( 266 ) 



pliorns the transition phenomenon could be indicated also with the 

 pseudo-h inari/ conception of the sjstera according to the new con- 

 ception, but this being impossible for the sulphur, we are compelled 

 to reject fig. 1 and to consider the system sulphur to be pseiidoterna?y, 

 as has been done in fig. 2, In the T, X-diagram drawn by Dr. De 

 Leeuw according to my directions, the three pseudo components are 

 indicated by Sr, Sm, and Sa- Further melting-point figures have 

 been assumed for the three pseudo-binary systems, yyhich have been 

 represented in the three side ])lanes of the trilateral prism. 



In the pseudo-binary systems Sm + S^ and Sr -\- S,j. a region of 

 non-niiscibility has been assumed which comes in contact with the 

 melting-point line of Sm rosp. >S'a' ^). 



The only complication which the pseudo-ternary figure displays is 

 exactly this meeting. If we start from the three-phase ecpiiiibrium 

 between the monoclinic mixed crystal phase and the two liquid layers 



Kf 



Fig. 2. 



'^) When this paper had already been written it has been found by me in colla. 

 boraiion with Dr. de Leeuw that the supposed region of non-miscibility does not 

 exist, so that it should be removed from figs 1 and 2. 



