306 



BRIDGMAN. 



-1.2 



O 

 X 



o 



> 



UJ 



-a 



fS -. 



40° 50° 60° 70° 



Temperature 



Magnesium 



Figure 12. Magnesium. Thermal E.M.F. of a couple composed of^one 

 branch of uncompressed metal, the other compressed to the pressure in 

 kg./cm.2 indicated on the curves, the junctions being at 0°C and the tempera- 

 ture plotted as abscissae. 



40" 60 

 Temperature 



Magnesium 



40° 60° 

 Temperature 



100° 



Figure 13. Magnesium. On the left, the heat absorbed by unit quantity 

 ot electricity in flowing from uncompressed metal to metal compressed to 

 the pressure indicated on the curves, as a function of temperature. The 

 1 homson heat of magnesium is not affected by hydrostatic pressure. 



