98 



BRIDGMAN. 



compressed by ramming into an open steel shell, and pressure trans- 

 mitted directly to it by kerosene. Apparently there was no soluble 

 impurity present, because no rounding of the corners of the isothermals 

 was ever detected. The quantities used were 85 and 103 gm. 



.025!^-^5"^'T^"^'¥^'«f: 



B 



be .020 



.000 



12 3 4 5 6 



Pressure, kgm./cm.^ x 10^ 

 Silver Iodide 



Figure 22. Silver Iodide. The observed differences of volume between 

 the several phases. 



Id 2.0 



012345G7 



Pressure, kjjrsi./cm.' x 10^ 



Silver Iodide 



Figure 23. Silver Iodide. The computed values of the heats of transition 

 and the changes of internal energy. 



The width of the band of indifference was not nearly so great for 

 this substance as was expected. It was greatest on the I-II curve, 

 being here nearly constant at 80 kgm., least on the I-III curve, where 

 it varied from 16 to 25, and intermediate on the II-III curve, where it 

 varied from 20 to 60, being greatest at the lowest pressures. The 



