THERMO-ELECTRIC QUALITY UNDER PRESSURE. 



291 



0° 



40" 60" 

 Temperature 



40° 60° 80° 

 Temperature 



Thalli 



mm 



B 

 O 

 to 



E 

 o 



JS 



H 



Figure 5. Thallium. On the left, the heat absorbed by unit quantity of 

 electricity in flowing from uncompressed metal to metal compressed to the 

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

 the excess of Thomson heat in metal compressed to the pressure indicated on 

 the curves over uncompressed metal, as a function of temperature. 



TABLE III. 



Thallium. 



Thermo-electromotive Force, volts X 10®. 



