MAGNETIZATION \ S I i MAGNETOSTRICTION 



11 



As has been already noticed in the previous contribution, the 

 increase of volume in nickel steels by magnetization is nearly 

 proportional to the strength of the field. The change is enormously 

 large com] tared with that in the constituent metals iron and nickel. 

 The maximum effect is observed in 29 per cent Xi., being about 



