POLYMORPHIC TRANSFORMATIONS OF SOLIDS. /i 



The reason for the too high difference of compressibility found at high 

 pressures is not clear. At any rate, one would seem justified in assum- 

 ing that KSCN is abnormal in that the low temperature form is more 

 compressible, expansible, and has a higher specific heat than the high 

 temperature form, and that the differences are unusually large. 



1000 2000 3000 

 Pressure, kgm./cm.^ 



Potassium 5ulfocyanide 



4000 



Figure 5. Potassium Sulfocyanide. The observed differences of volume 

 ])etween the hquid and solid I, and between solids I and II. 



Figure 6. Potassium Sulfocyanide. 

 and the changes of internal energy. 



1000 2000 3000 4000 

 Pressure, kgm./cm.^ 



Potassium Sulfocyanide 



The computed values of latent heat 



