100 Messrs. K. Honda and T. Terada on the 



T = 3366 gr./mm. 2 ; *=13°*0 C. 



T- 



:0. 



r=12'-8. 



r=36'-7. 



r=69'0. 



H. 



I. 



H. 



I. 



H. 



I. 



H. 



I. 



0-21 



9-4 



0-21 



9-0 



0-25 



31-4 



0-22 



61 



0-56 



186-2 



0-58 



193-6 



0-64 



2325 



0-67 



155-9 



0-74 



442-9 



0-73 



436-6 



0-71 



528 



0-72 



245-1 



0-93 



784 



0-99 



824 



0-90 



768 



0-81 



400-8 



1-33 



863 



1-34 



866 



1-45 



839 



0-94 



767 



2-40 



934 



2-18 



924 



325 



912 



1-23 



800 



3-64 



973 



370 



972 



4-64 



936 



2-51 



863 



7-83 



1016 



7-25 



1011 



8-37 



967 



3-75 



890 



11-86 



1035 



11-44 



1033 



12-55 



989 



9-74 



941 



16-56 



1048 



1681 



1047 



1765 



1006 



1763 



976 



21-48 



1057 



21-78 



1056 



22-78 



1018 



22-72 



991 



44-84 



1074 



4483 



1074 



46-43 



1044 



46-44 



1029 



86-7 



1081 



860 



1082 



89-9 



1056 



89-9 



1051 



170-8 



1084 



171-5 



1084 



172-2 



1062 



172-2 



1062 



359-8 



1086 



361-8 



1086 



361-7 



1065 



364-0 



1067 



Thus in the case o£ nickel-steels, the change of magnetiza- 

 tion by tension does not differ much for the different orders 

 of straining and magnetizing. So also in the change of 

 elasticity, we found a fair agreement between the values for 

 different orders, especially at high tensions. On the other 

 hand, the change of magnetization by twist differs sometimes 

 in a considerable degree for the different orders, while in the 

 change of rigidity the agreement between the values for 

 different orders is generally good, if the tension be large, 

 especially in 28*74 and 70*32 per cent, of nickel. In general, 

 alloys, for which the hysteresis effect is small, have also a 

 small difference in the changes of elastic constants by 

 magnetization for the different orders of magnetizing and 

 straining. 



Thus far we have seen that generally the change of 

 magnetization by stresses differs more or less with the dif- 

 ferent orders of applying the magnetic field and stress. In 

 some cases, the difference is not only quantitative but also 

 qualitative, as for the effect of twist in Swedish iron or in 

 50*72 per cent. Ni, if the initial effect of twisting under 

 constant field be compared with the results of magnetization 

 under constant twist. On the other hand, there are examples 

 of good coincidence, as in the case of the tension effect in 

 nickel and 70*32 per cent, nickel-steel. Generally speaking, 

 the tension effect shows a better agreement for the different 

 orders of magnetizing and straining than for the torsion 



i 



