NO. 6 



BODY RADIATION ALDRICH 



II 



was immersed. By a series of changes of the temperatures of both 

 baths a plot (fig. 6) of the relationship between galvanometer deflec- 

 tion and temperature difference was made. By carefully keeping the 

 whole set-up— galvanometer, scale distance, electrical resistance and 



Fic, 6.— Thermoelement calibration curve. 



contacts, etc.— unchanged, negligible change was found in the cali- 

 bration curves made at the beginning, during and at the end of the 

 experiments. It is probable that the calibration curve is accurate to 

 o°.i C. To avoid error from lack of uniformity of the galvanometer 



