82 "^Mr. Williams on Magnetic Change of Resistance in Iron, 



Fiff. 2. 



150 



W 











L__— 1— — f-" 7 ° 



R 









^\^ 





130 

 |2C 









>K 









X 1 



110 

 100 



90 

 80 















/ 



^^ 



__ : — 91° 





/ 



/ 



/ j^-^C 





l 









^ I 





J 



// 





I56° : 



7C 

 60 

 50 



40 

 30 



!/// : 



^^^T 







/■// s 



I 







If/ / L— — 











////X 





1 i 















?0 



11// 













~w 









3 



10 











1 -dys 









; 





i 



i -H- 



100 aOQ 500 400 500 600 700 800 900 



Change of Resistance of Nickel at Temperatures 7° to 290° C. 

 Fie. 3. 



'$■* 



















295° 













/ 





















\\ / 

















31 



5° 









~~ 



















373 





\ 

















328° 















355° 



\ 

















534° 



345° -H- 



'~0 100 200 300 400 500 600 700 300 900 



Change of Resistance of Nickel at Temperatures 295° to 373° C. 



For temperatures above 300° the curve bends down and 

 finally crosses the axis of H, denoting that the resistance is 

 decreased by magnetization. The curves for these tempera- 

 tures are shown on a large scale in fig. 3, and in fig. 4 the 



