Magnetic Separations of the Lines of Iron, Nickel and Zinc in Different Fields. 35 



Table XXI T. 



Aa 



-^ 18 larger in lower ßelds than in tlie higher, as is easily 

 seen in the last column of the table. The deviations from the 

 mean are also seen in Fig. 1 of Plate XVI. The results of the 

 former investigators are : 



(23) /i: 3075-725. 



Intensity 3; sharp triplet; character b. The third order 

 spectrum of this line was photographed together with the second 

 order of /:4(>S0'138 of zinc as field determination. Plate I, Fig. 

 4; Plate IV, Fig. 3. 



