Cueve VIIL 



CUBVE IX. 



Induction per 

 square centimetre 

 2000 1 



- 



■ 



■ 



H 





1 











■ 



I 



V 





Te 



MP? 1 



79-2° 



1 



1 











— i 



/ 



20 3 



40 5 







Magnetising force. 



