•62 



Art. 7. — K. Yamacla 



(14) (i) Among all nickel lines which I have studied in 

 différent magnetic fields, U:3619'39, 3515'UG, 3461-65, 3414-82 

 and 3380-58 are sharp triplets and their separations are pro- 

 portional to the fields applied, as in the case of all sharp triplets 

 of iron lines, (ii) Ikit the separations of the sharp triplet 3566-37 

 are linearly proportional to the fields applied at stronger fields, while 

 -g- is larger in lower fields than in the higher, (iii) -^-^i 3524-53, 

 3492-1)6, 3458'45 and 33U2-97 are diffuse triplets and their separa- 

 tions are not proportional to the fields, as we have already seen in 

 the iron difïuse triplets, (iv) But 3446-27 is the only diffuse 

 triplet whose separations are nearly proportional to the fields. 



VI. The magnetic Separation of a Zinc Line. 



/: 3345-13. 



>^: 3345*13 of zinc is a line of the first subordinate series of 

 zinc, and its magnetic separation, has already been studied by 

 ]\liller'^ wlio obtained the result 



AX 



X 10'= 11 -27, 



A>. 



xlO^'=10-ll 



jj " xv^ XX _. , JJJ2 



In the course of my investigation of iron and nickel lines in 

 different magnetic fields, this line is also photographed on the 

 plates, and I think it may be of interest to report the results of 

 measurement. The fourth order of this line was photographed 

 and the fields were measured with the aid of >^: 4680-138 (3rd 

 order) on the same plate. Plate I, Fig. 2. 



Taj'.li: XLVI. 



1) Miller, Ann. d. Phys. (4), 24 (1907), pp. 105—136. 



