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



Tap.le I. 



From the table we see that JA increases as the fields become 

 higher. The feature is seen from Fig. 1, Plate VII. The mean 

 value of the first fourteen ^^-xlO^^ is 10*88 and the deviations 

 from this value are given in Table I. 



For comparison, I insert the results of former observers: 



