Magnetic Separations of the Ijines of Iroii, Nickel ami Zinc in Different Fields. ;-J7 



Table XXV. 



A), 



Evidently -^ is not constant within these narrow ranges. 

 Jjut the data are too few to decide the feature. For comparison, 

 I give only: 



(26) ;.:2756-;:51. 



Intensity 1; diffuse triplet; character b. Plate I, Fig. 2; 

 Plate III, Fig. 2. The fifth order spectrum of this line is photo- 

 graphed on the plate together with the third order of >?.: 4680" 138 

 of zinc. 



Table XXVI. 



Further study is necessary to decide the character, hut in 

 these regions the variation may be considered as regular and 

 approximately IF 15 adopted as the mean value of H>;i~^ 10''. It 

 is to be regretted that I could not find any published data as to 

 the separation of this line. 



(27) ;:275ry73. 



