10 



Art. 7. — K. Yamada : 



and the same plate there are various features of intensity of 

 separated hnes. As to the triplet, I classify the following three- 

 cases: (rt) the three components have equal intensities, (b) the 

 inner component is stronger than the outer and (c) the outer 

 components are stronger than the inner. 



I 



CL 



b 



c 



Fig. 6. 



IV. The Magnetic Separation of Iron Lines. 



The wave-lengths are represented in international units and 

 the intensities of lines when the}^ are not affected are taken from 

 the Gtli volume of Kayser's Spectroscopic. 



(1) A: 4415-13. 



Intensity 10. King took this for a septuplet. According to 

 my measurements, it has many peculiarities; a remarkable 

 character is the decrease of intensity in high fields, the cause of 

 which may be the broadening of components, but further separations 

 can neither he observed in the parallel nor in the normal component. 

 The broadening of the central component is larger than the outer 

 two.'-* The table contains the distance between two outer com- 

 ponents. The fields were determined by the separation of À: 

 4680'] 38 of zinc, photographed on the same plate. Plato I, 

 Fig. 1; Plate III, Fig. 1 and Plate VII, Fig. 1. 



1) Mr. Y. Takahashi jirivatcly told uie that eacli component of this lino was found to 

 be further separated in his research with an echelon spectroscope of greater resolving power 

 than the concave grating used by me. 



