ß2 Art. 8.— Y. Takahashi : 



We find in tlie table that the ratios cannot be expressed in 

 simple fraction^;, p and q are not snaall enough except for the case 

 of 4071 '75, and we can not find the unit of separation common to 

 these hnes. When the ratios between one of these separations 

 and the rests are taken, the fractions are less simple as shown in 

 the last two columns. 



The fact that iron and other elements rich in lines give 



divergent values of the specific separations seems to require some 



consideration. That -^ is different for electrons radiating Unes of 



different wave lengths is not plausible, at least for those which 



emit radiations of nearh^ equal wave lengths. I think it is more 



reasonable to attribute the divergent values of the specific 



separations to the change of the atomic field. If we accept the 



saturnian atom, it may be considered that the strong magnetic 



field, which is usually supposed to be present in the atom, 



originates in the electrons in their orbital motions. When the 



external magnetic field is applied, the orbit may be changed, 



giving rise to the change of the atomic field, which possibly 



amounts to a magnitude comparable with the external field. Tfiis 



change of the atomic field may afïect the magnetic separation, and 



divergent values of the separations proportional to the magnetic 



field may appear, if the change of the atomic field is proportional 



to the external field applied. Those elements rich in lines must 



be rich in electrons with orbital motions, whose radii are 



considerably large even in the non-radiating state. The peculiar 



positions occupied by them in the periodic table and the low 



electro-potentials among others seem to support the assumption. 



It is natural that the change of the atomic field is large for those 



elements rich in electrons with orbital motions, and the divergent 



values of the specific separations obtained with the elements rich 



in lines can be explained. Besides the atomic magnetic field, the 



change of the electric field caused by the change of the orbits 



may play an important rôle. 



For the other lines the measurements are Jiot so accurate as 

 for the seven lines above related, but many of them give 

 separations proportional to the magnetic field so far as the present 



