Magnetic Permeability, c., of Iron at Low Temperatures. 85 



FIG. l. 



Magnetising force in C.G. units. 

 I 234567 69 10 II 12 15 14 15 16 17 IB 19 20 21 



14,000 

 WOO 

 12000 

 11,000 

 10000 



g 8000 

 D 



: 7,000 



"Q 



^ 6000 



5000 

 4,000 



3000 



2000 

 1000 



Permeability And Magnetic 



in Soft Iron 

 at + 15 Centigrade. 



\ 



\ 



500 1000 1,500 2,000 2,500 6,000 3,500 4,000 



Scale of Permeability in C.G.S. units. 



