46 Messrs. K. Honda and T. Terada on the Change of 



Table IV. * = 9°-5 C. 



i 



T = 132; 

 H. 



) gr./mm. 1 

 |xlO c . 



T=l 962 gr./mm .2 



T=2600 



gr. mm.- 



T = 3239 gr./mm. -- 



H. 



7 X1 ° 6 - 



H. 

 2-6 



^xlO*. 



H. 



f XlCG - 



2-3 



- 009 



2-5 



- 0-09 



- 0-09 



2-3 



- 004 



6-9 



- 0-92 



7-8 



- 0-78 



8-8 



- 0-90 



8-3 



- 0-54 



137 



- 304 



14-5 



- 250 



162 



- 2-54 



15-4 



- 1-90 



22 4 



- 6-20 



22-5 



- 5-32 



231 



- 4-63 



23-1 



- 402 



38-2 



-11-62 



38-1 



-10-72 



390 



- 9-84 



38-9 



- 9-02 



491 



-14-02 



. 49-3 



-14-02 



50-4 



-13-22 



50-2 



-12-32 



71-9 



-1916 



71-5 



-18-76 



71-5 



-18-44 



71-5 



-17-60 



120-4 



—25-20 



120-2 



-25-44' 



120-4 i 



-25-40 



120-5 



-25-46 



191-6 



-29-46 



191-5 



- 303 



192 



-31-0 



192-0 



-31-4 



261 



-31-7 



258 



-32-7 



202 



-333 



258 



-342 



328 



-32 9 



328 



- 34-0 



331 



-34-8 



330 



-359 



390 



-337 



390 



-34-8 J 



392 



-35-7 



391 



-36-8 , 



The change of elasticity is as follow 

 given in fig. 4 with full lines. 



Curves are also 



Table V. 

 AT = +638 gr./mm. 2 £ = 8 a 9 C. 



Here the general aspect of the change is similar to that of 

 the pure nickel. The amount of the change is, however, far 

 less than in the previous specimen. The effect of tension is 

 also to drive the maximum of the change towards higher fields, 

 but not in such a decided way as in the case of pure nickel. 

 Moreover, the increased tension increases the amount of the 

 maximum change, up to the highest tension employed. 

 These remarkable differences between the pure and the com- 

 mercial nickel are probably due to the imperfect annealing 



