f 401 ) 



sited 

 liave 



B 



(Fig. 3). This case is |»ussil)l(' when llic lines of jlio coiiipoiKMils 

 tlio shape of Fig. 2 and iiieel above (/. 



In the sjjace indicated by L 

 (here exist again unsatnraled sobi- 

 tions ail siluatcd below the eutectie 

 point C of a -]- h. 



Wheji (he eoniponnd is endo- 

 thei-niic the order of the dissoei- 

 a(ion isotherms is the reverse of 

 that indicated in Fig. 2. Withont 

 enlering into all (he pecnliarities 

 which the solnbility-lines may 

 then exhibit, attention mnst be 

 called to two as j-et quite mdviiown 

 t3'pes of melting point lines which 

 may occur (Figs. 4 and 5). 



In the first figure we have the 



remarkable fact that the compound 



forms with the component a a 



eutectie point C as well as a 



transition point D. In the second 



figure, the melting point line of 



Fig. 3. the compound occurs as a closed 



curve widi two vertical lines in points where the heat of solution 



is zero, and two melting points. 



■■ " ■ j( 



/ » 



/ » 



/ 1 



/ I 



! / 



Fis;. 4 



Fis. 



