12 



ART. J. — K. liOXDA AND T. TERADA. 



As may be seen Iroin Fig. 1, nickel contracts ])y magnetiza- 

 tion in a ^Yay similar to that given by many earlier experiment- 

 ers ; in weak iields, the contraction rapidly increases with the 

 increasing field, l)ut gradually tends to an asymptotic value, as 

 the field attains a higher value. The increased tension decreases 

 the amount of contraction for low fields, wdiile for higher fields, 

 it increases the contraction. Thus there exists a certain field in 

 which the effect of the additional tension is null. This neutral 

 point for two successive tensions, shifts toward the higher field, 

 as the tension increases. In their general course, tlie curves are 

 quite similar to those already obtained l)y Mr. 8. Shimizu and 

 one of us.''' 



The change of elasticity of nickel is given in the table below 

 and in Fig. 2. 



TABLE 11. 



/^lo.'^o C. 



*) K. Jlondu iiiul S. Shimizu, .Juur. Sf. Coll., Vul. XVJ., An. '.), lUU-'; 



