74 



Messrs. K. Honda and T. Terada on the 



The effect of applying the maximum tension at once is nearly 

 the same as the effect o£ the graduated applications of tensions. 



The change of magnetization by tension under different 

 initial loadings, where the demagnetization was alwa}^s 

 effected with the initial load, was also tested. For an equal 

 increment ST of T, &U decreases rapidly, as the initial T 

 increases, whereas in the graduated applications of tension, 

 SL increases nearly proportionally to ST. The difference 

 between these two values of SL is considerable. 



(b) Magnetization under Constant Tensions : (I, H) T . 



The magnetization increases rather rapidly in low fields and 

 gradually approaches saturation. The effect of tension is, in 

 its general features, similar to that obtained from (SI, T) H . 

 With low tensions, the increase of magnetization is con- 

 siderably less than the value of the initial effect obtained from 

 the latter experiment, while with high tensions, the contrary 

 is true. These facts will be seen in the following tables and 

 curves (SI, H) T in dotted lines in figs. 5 and 7. 



Swedish Iron. 

 f = 16°-5 C, 



T = 152 



*r./mm. 2 



T=1714 



gr./inm. 2 



T=7929 



gr./iatri. 2 



H. 



I. 



H. 



I. 



H. 



I. 



0-87 



18-5 



0-8S 



22-3 



0-84 



21-3 



1-63 



52-7 



2-17 



91-7 



1-63 



59-8 



2-89 



161-3 



3-12 



235-5 



316 



269-8 



4-42 



509 



3-67 



44L-3 



3-86 



4954 



6-35 



835 



469 



710 



4-48 



727 



848 



1000 



644 



946 



657 



9S2 



13-60 



1141 



15-23 



1180 



13-51 



1149 



23-72 



1229 



2410 



1238 



23-85 



1213 



35-60 



1275 



35-83 



1280 



35-88 



1251 



58-39 



1328 



58-39 



1331. 



54-34 



1300 



127-3 



1416 



1266 



1419 



124-8 



1337 



219-4 



1493 



197-4 



1478 



195-6 



1448 



3192 



1542 



3191 



1547 



296-8 



1511 



386-5 



1569 



383-0 



1573 



381-9 



1547 



