86 



Messrs. K. Honda and T. Terada on the 



nickel-steels of 22, 25, and 30 per cent, of nickel, and by 

 Prof. H. Nagaoka and one of us * with nickel- steels of 

 35 and 45 per cent, of nickel. Hence somewhat detailed 

 descriptions of the phenomena will not be unnecessary. 



(a) Change of Magnetization uy Tension under Constant 

 Field: (SI, T) H . 



The magnetization increases at first rather rapidly, but 

 afterward slowly with the tension. The increase in low 

 fields is tolerably large, but in strong fields it is very small. 

 The initial effect is significant only for weak fields, where 

 the cyclic is remarkably less than the initial. The following 

 tables and figs. 22, 23, & 24 (PI. III.) show these changes 

 of magnetization. 



Curves (SI;, H) T from (8Ij, T) H rise rapidly with the field, 

 attain sharp maxima at low fields, fall at first rapidly and 

 then gradually to asymptotic values, as shown in figs. 25, 26, 

 and 27 in full lines. The maximum of SI increases with 

 tension. For the same tension, the maximum rapidly 

 increases with the percentage content of nickel. 



28*74 per cent. Nickel-Steel. 

 Initial T=134 gr./mm. 2 ; £ = 14°'0 C. 



H'. 



T = 1370 



gr./inrn. 2 



T=2'J 



06 gr. 



T = 4077 gr. 



T = 6818 gr. 





















SI t . 



8l e 



oh 



dl c . 



dP. 



^ 



N+ 



SI, 



o-ii 



1-1 



8-8 



... 





22 - 2 



30-3 



36-0 ! 35-3 



0-25 



201 



26-4 



624 



57-5 



97-5 



77-6 



130-3 94-1 



0-49 



46-7 



31-8 



97-6 



04-7 



129-2 



86-1 



155-5 104-0 



1-11 



43-4 



31-7 



78-0 



59-9 



97-6 



76-4 



113-0 90-0 



2-30 



31-6 



26-8 



52-2 



45-7 



63-3 



56-1 



72-2 64-5 



4-65 



18-8 



17-2 



28-9 



27-0 



34-0 



320 



38-6 36-3 



10-68 



5-9 



5-3 







11-0 



10-0 



]3-8 12-8 



24-32 



2-3 



20 







5-9 



5-3 



8-8 8-0 



55-48 



1-5 



1-6 







4-9 



4-9 



7-8 8-0 



172-9 



1-5 



1-3 







4-4 



4-1 



7-4 7-0 



374-3 



1-4 



1-3 







40 



3-9 



6-6 6-6 



* Nagaoka and Honda, Jour. Coll. Sci. xvi. Art. 8 (1902). 



