of Magnetic Stress in Magnetostriction, 459 



Further, as has been already pointed out by Chree"*, the 

 longitudinal stress in iron is, according to both theories, a 





@liSH^P^j^^^^^^^^^SB 

















IH^HHS 





Mmmmm 





—■ 



818 Hi 



■^hB 





HH 





IIEIIH 



















3 



3Q* 



tension, not a pressure ; its effect is therefore to lengthen, not 

 to shorten a piece of soft iron along the lines of force. 



* ' Nature/ Jan, 23, 1896. 



