78 



BRIDGMAN. 



No other modifications were found to 12300 kgm. at 20° or to 12000 

 at 200°. 



Potassium Chlorate. — This substance was Kahlbaum's purest, 

 used without further purification. It was hammered into a compact 



I -32 



^ .30 



Pressure, kgm./cm.' x 10^ 

 Potassium Sulfide 



Figure 10.""' Potassium Sulfide. The computed values of the heat of 

 transition and the change of internal energy. 



mass in a thin steel shell, open at both ends, with lateral perforations, 

 and the pressure was transmitted directly to it by kerosene. 5.3 gm. 

 were used. It is remarkable that it did not explode under pressure 

 by spontaneous combination with the kerosene. NaClOs does so 



TABLE IV. 



Potassium Sulfide. 



