338 Prof. Nagaoka and Mr. T. Takamine on Anomalous 



becomes weak as the field is increased, and can no more be 

 observed above 4 kilogauss. The — branch, on the other 

 hand, increases in intensity, especially for +117. The 

 change in wave-length bears a linear relation to the field np 

 to about 6 kilogauss for +59 and to 10 kilogauss for +117. 



Fig. 1. 



The change then becomes very slow, and the satellites 

 approach the principal line asymptotically. The rapid 

 decrease in the rate of change seems to be caused by the 

 approach of the satellites to the principal line, and this seems 

 to be the characteristic feature observed in this class of 

 spectrum lines. On the side towards the smaller wave- 

 length the change is even more marked than on the 



