10 



AKT. 12.-K. HONDA. S. SHIMIZU, AND S. KUSAKABE 



width by 1 or '2 cm ; liowever, such -x change hud no sensible eüect on 

 our results. 



4. The dimensions of our specimens and their niodulii of 

 elasticity are given in the following table ; — 



The present arrangement was not suitable for the absolute 

 measurement of the modulus of elasticity, since the yielding effect of 

 several parts of the arrangement disturbs the result. Hence the 

 modulus of elasticitv was determined by the ordinary method of 

 flexure with two mirrors. 



The intensity of magnetization of these specimens was determined 

 by the magnetometric metliod. The results are graphically shown 

 in Fig. 1. Ordinate represents the intensity of magnetization and 

 abscissa the effective field (H = H' — N J). 



Tlie maofnetic chancre of length was found to have an intimate 

 relation to the change of elasticitv : it was therefore measured for each 

 specimen. To each end of the bar, a brass rod of the same thickness 

 and 15 cm long was soldered. The bar was there vertically suspended 

 co-axial with the magnetizing coil by means of a screw adjustment. 

 From its hjwer end, a weight of 1 or j kilograms was hung by a 

 copper wire. The rotating cylinder with a mirror was brought 



