80 



BRIDGMAN. 



branching below the triple point. The reasons for this suspicion are 

 the high values of the equilibrium pressure found at 0° from the run 

 lasting four days, and also the high value found for AV at 0°. The 

 high value of AV may be due to experimental error, which is larger 

 than usual at 0° because of the great lag, but the high equilibrium 



E 



bD 



u 

 u 



a 



be 



^Pressure, kgm./cm.^ x 10' 

 Potassium Chlorate 



Figure 12. Potassium Chlorate. The computed heat of transition and 

 the change of internal energy. 



pressure can hardly be explained in this way. In any event, the 

 data given above for the lower end of the curve should be used only 

 with the greatest reserve; it seems that probably either the curve 

 should get steeper toward 0°, instead of remaining straight as drawn, 

 or else there is a new modification, and the transition line should 

 branch. 



TABLE V. 



Potassium Chlorate. 



