EFFECTS OF PRESSURE ON NITRATES. 



595 



rately the change of volume of whatever was in the apparatus at the 

 time. The point at 11200 was measured in the regular way by de- 

 creasing pressure at constant temperature; the point at 11700 was 



_ 3 4 5 6 7 8 9 10 11 12 

 Pressure, kgm./cm.^ x 10* 

 Thaliium Nitrate 



Figure 7. Thallium Nitrate. The observed equilibrium pressures and 

 temperatures. 



.0025 

 Id .0020 

 Q. .0015 



E .0010 

 > .0005 



U-l\ 



iliMi 



.000(^ 123456789 10 

 Pressure, kgm./cm.^ x 10* 

 Thaliium Nitrate 



'M 



11 12 



Figure 8. Thallium Nitrate. The observed changes of volume. 



obtained by changing temperature at constant volume, and is the 

 mean of two points, practically the same, obtained with increasing 

 and decreasing temperature. For this run, the temperature was 

 lowered to 110°, corresponding to a superpressure of 6000 kgm., to be 



