E. NEWTON HARVEY 



141 



o 



> 



o 



o 



> 



« — I 



t5 



26 



27 

 28 



29 

 30 



31 

 32 

 33 



9.40 9.50 10.00 An. 



Time in Tninates 



Fig. 2. Curve showing temperature change when two tubes containing water 

 at the same temperature are mixed. . 1 galvanometer scale division = 0.003°C. 

 Dots represent readings of thermo-couple in tube D ; crosses, readings of thermo- 

 couple in tube E. 



