POLYMORPHIC TRANSFORMATIONS OF SOLIDS. 



87 



The experimental results are shown in Figures 15 and 16, the com- 

 puted values of A// and AE in Figure 17, and the numerical values in 

 Table VII. All the determinations of the -p-t points are shown in the 



.030 

 • .025 



E 



^.020 



a> 



T, 015 



I .010 



^.005 



.000^ 



12 3 4 5 6 



Pressure, kgm./cm.^ x 10' 



Carbon Trichloride 



Figure 16. Carbon Trichloride. The observed differences of volume be- 

 tween the several phases. 



3.0U 



^2.0 



1.0 



bo 





_:!_._. l_ 



njiTr-tr-:;]--::::::^;::::;::;!":: 



12 3 4 5 6 



Pressure, kgm./cm.^ x SO^ 



Carbon Trichloride 



Figure 17. Carbon Trichloride. The computed values of the heats of 

 transition and the changes of internal energy. 



figures, but the bad values of AV are omitted, as these are much more 

 subject to error; in fact, one of the AV points falls on the wrong curve. 

 No other modification was found to 12000 kgm. at room tempera- 

 ture. 



