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



Swedish Iron and Tungsten- Steel. PI. III. figs. 30 & 31. 



Table XXVI. 



Swedish Iron. Tungsten-Steel. 



K =0'756xl0 12 . * = 14°-6C. K = 0-608 x 10 12 . * = 14 a 0C. 



T = 3113 gr./mm.2 





T=3240 gr./mm.2 



H. 



fxio. 



H. 



— XlO*. 



24o 



74-4 



1462 



280 

 385 



-003 

 -4-015 



+0-40 

 +0-28 

 4-0-25 



24-2 



72-1 



1627 



403 



-0-03 



+0-00 

 +0-02 



+012 



The rigidity o£ Swedish iron slightly decreases in weak 

 fields, but generally increases by magnetization. The amount 

 of increase becomes greater and then slowly decreases with 

 the field. The change of rigidity of tungsten-steel is very 

 small; it slightly decreases at first, and then steadily 

 increases with the field. Both of these specimens are 

 characterized by the smallness of the change of rigidity as 

 well as that of elasticity. By a similar method, H. Tomlinson * 

 found that for a moderate field the change of rigidity of an 

 annealed iron wire is insensibly small. 



Nickel-Steels. PL III. figs. 32, 33, & 34. 

 Table XXVII. 

 28-74 per cent. M. K = 0'613 x 10 12 . t = lb°'5 0. 



T=928 



gr./nim. 2 



T=1806gr.mm.2 



T=4096 



gr./mm. 2 



H. 



^xio*. 



H. 



s«» 



H. 

 62 









3-8 



0-03 



0-06 



12-2 



029 



120 



0-25 



11-8 



0-13 



48-0 



0-43 



47-9 



034 



48-1 



0-29 



1177 



0-53 



116-9 



0-42 



116-3 



034 



206 



054 



204 



0-44 



204 



0-35 



303 



0-53 



301 



0-44 



300 



033 



409 



0-48 



406 



046 



403 



0-38 



