148 Dr. S. W. Richardson on the Magnetic 



and 200° C. The results are given below, and the curve 

 obtained from them is shown on fig. 17. 



Fig-. 17. 



1400 

 1200 

 1000 

 800 

 600 

 400 

 200 



O 2-0 40 60 



The curve obtained is similar in general form to a B and H 

 curve. 









,\ 



/ 







/ 









/ 





[i 



i 



1 









/ 







/ 



f 







/ 



/ 





H 





H. 



/3. 



6-75 

 4-14 

 1-73 

 0-72 



(1600-340) 

 (1110-250) 

 ( 435-130) 

 ( 138- 44) 



1260 



860 



305 



94 



Fi*. 18. 



1500- 



1000 



500 









/ 



/ 





























B 









/ . 



/ 



/ 



























-907 



-60V 



-20? 



+20; 





/ 



60 



^ 



100° 





















/ 





/ 

 / 











140° | 



sa o 2< 



0° it 



01 3< 



Jfi° 5 



aoJL 



38 



y_ 





H 



/ 





/ 



























42 



21 



440° 









1-0 10 1-0 2-0 4-0 60 80 



