(OM ^- \ 

 ooo ) 



II 



t 



32° 

 53° 



58" 

 |100° 

 154° 



a X 10» 



— 73 



— 80 



— 90 



— 108' 



— 124 



The values I are averages of the results of four series each, which 



have been given in my "Dissertation". 



The values II have been obtained with another similar instrument 

 T 



500 - 



400 



300 



200 



100 



(rXlO« 



-25 

 + Series I. 

 Series U. 



50 



-100 



-125 



