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

 The results of experiments are as follows : — 



Nkkel. PL III. fig. 35. 



Table XXVIII. 



e=2°'5. 



t = 21°'0V. 



T=1022 



gr./mm. 2 



T=309C 



gr./mm. 2 



T=5465 



gr./mm. 2 





oK 1A ., 





^K , M 





SK 



H. 



Tr xio 2 . 



K H 



H. 





H. 



r -xio*. 



8-3 



+ 0-83 



49 



+ 0-84 



9-3 



4- 034 



139 



- 0-24 



9-7 



+ 141 



150 



+ 0-30 



233 



- 237 



18-7 



+ o-oo 



215 



- 030 



437 



- 311 



430 



- 8-81 



26-4 



-- 1-26 



86-8 



- 041 



85-4 



-10-04 



42-4 



- 7-00 



125-6 



+ 2-45 



1234 



- 6-84 



85-3 



-17-33 



145-8 



+ 3-58 



143-2 



- 5-37 



123-8 



-15-21 



207 



+ 6-39 



2044 



- 143 



174-2 



-1045 



311 



4- 9-17 



304 



+ 2-53 



305 



- 2-90 



441 



+ 1100 



432 



+ 5-13 



432 



+ 043 



e=D°-o. 



T = 1022 



gr./mm. 2 



T=309C 



gr./mm. 2 



T=5465 



gr./mm. 2 





^K 





oK 





^K , rt 



H. 



jT X 10 2 . 



H. 



kT^ 10 "- 



H. 



k-x 102 - 



6-2 



+ 0-68 



4-0 



+0-67 



5-6 



+ 0-08 



11-3 



- 0-08 



8-8 



+ 1:39 



10-1 



+ 0-12 



19-6 



- 1-54 



15-3 



-048 



154 



- 0-31 



42-8 



- 2-14 



26-9 



-4-87 



27-1 



- 3-05 



8G-3 



- 0-00 



43-3 



-794 



42-8 



- 7-87 



124-2 



+ 2-18 



86-2 



-7-33 



85-7 



-13-51 



145-8 



+ 3-27 



143-6 



-3-84 



123-8 



-11-95 



208 



+ 5-68 



207 



-070 



174-2 



- 8-53 



310 



+ 8-26 



309 



+2-76 



306 



- 225 



439 



+10-06 



438 



+5-38 



432 



+ 0-76 



In nickel, the change of rigidity and the effect of tension 

 are very remarkable. Under small tension, the rigidity first 

 increases slightly, then decreases rapidly as the field is 

 increased, attains a minimum and gradually increases, till in 

 a certain field it recovers its initial value. As the field is 



