64 Art. 8.— Y. Takahashi : 



show wavy fluctuations of the separations, though the measurement 

 of the last is not sufficient. 



5429'70 gives jo-components whose separation suddenly 

 increases at about 950t3 gauss and the observed points on each 

 side of the held lie on a separate straight line as if the meas- 

 urements were made for different components. King is of opinion 

 that they are possibly four /»-components, but the specific 

 separation given by him for the outer pair is nearly equal to that 

 at the weaker field as obtained by the writer. The separation 

 curve of this component somewhat resembles that of the n- 

 component of 4325"78. 



The separations of the î^-components of 50]8'45 (triplet), 

 4337 '04 and 4202*04 (both quadruplet) curve more or less 

 downwards at weaker fields. 



^-components of 4315'089 and 4250"79 indicate that the 

 separations do not tend to zero when the magnetic field vanishes, 

 though the /^-components of the former give a separation pro- 

 portional to the magnetic field. The separation of the n- 

 components of 4442*34 also, does not seem to vanish Avhen the 

 magnetic field vanishes, but that of the p-components is pro- 

 portional to the field so far as my experiment goes. 



The scattered points at the stronger fields in the separation 

 curve of 4294" 13 indicate that further resolution is possible if we 

 increase the magnetic field or the resolving poAver of the instrument. 



It seems that many iron lines are resolved in complicated 

 manner, the components being spaced not in equal intervals, but 

 they crowd together at their mean positions, so that we cannot 

 resolve them without a strong magnetiô^ field and an instrument 

 of high resolving power. 44 15* 13 was resolved into 7-components 

 with the strongest fields applitd, but the ^-component of 4325'78 

 was not resolved into fine comjjonents even with 37230 gauss, 

 though its broadening and fringed appearance indicate the 

 existence of a complicated resolution. 4132'U8 and 4U05'26 

 were observed to be resolvablo at least into ll-components in a 

 field stronger than 20U00 gauss, and the diffuse components of 

 many other lines also indicate further resolutions. Especially in 



