'90 



Messrs. K. Honda and T. Terada on th 



te 



70"32 per cent. JSickel-Steel. 

 *=13°-5 C. 



T=156 

 1 



J'r./mm. 2 



T^-959 gr. 



T = 17 



61 gr. 



T=3366gr. 



T = 4930 gr. 



H. 



I. 



18-5 



IT. 



I. 



H. 



I- 



11. 



I. 



H. 



I. 



0-25 



0-23 



21-9 



0-31 



26-9 



0-26 



18-5 



0-24 



9-5 



0-79 



94-5 



0-75 



128-8 



0-70 



162-2 



0-46 



132-9 



0-43 



180-6 



0-86 



127 9 



0-90 



327-5 



0-85 



557-8 



0-57 



206-5 



0-60 



289-0 



1-13 



325-4 



1-53 



609 



1-74 



758 



0-74 



478-8 



0-64 



347 7 



1-52 



430-4 



1-78 



654 



2-80 



841 



0-85 



738 



071 



532-0 



1-80 



503-6 



2-77 



763 



3-83 



884 



2-20 



903 



0-76 



734 



4-60 



769 



5-77 



892 



6-32 



937 



3-56 



946 



T45 



906 



8-04 



871 



io-oo 



955 



11-53 



985 



6-72 



981 



3-38 



970 



11-93 



927 



19-28 



1008 



19-67 



1016 



19-26 



1026 



6-75 



996 



2654 



998 



24-76 



1022 



25-14 



1028 



24-o3 



1034 



24-02 



1032 



50-9 



1022 



51-2 



1045 



52-0 



1047 



51-1 



1049 



50-9 



1043 



104-4 



1030 



1032 



1052 



104-3 



1055 



102-5 



1054 



99-0 



1048 



204-4 



1033 



204-1 



1054 



202-3 



1057 



200-6 



1056 



201-0 



1049 



3700 



1034 



368-5 



1055 



365-0 



1057 



362-6 



1057 



365'1 



1051 



(c) Change of Magnetization by Twist under Different 

 Tensions: (81, t) h> T . 



In very low fields the magnetization considerably increases 

 with twist ; in higher fields it first increases, but afterward 

 begins to decrease with the twist, and in still higher fields 

 the magnetization decreases nearly uniformly with the twist, 

 as shown in figs. 29, 31, 33, 35, 37, & 38 (PI. IV.). The 

 change of magnetization rapidly increases with the percentage 

 content of nickel. 



As for the cyclic effect (figs. 30, 32, 34, 36, 37, and 39), 

 it coincides fairly with the initial, except in weak fields. 

 With 28-74 per cent. Ni and 70'32 per cent. Ni, the increase of 

 magnetization is only observable in very weak fields, and the 

 magnetization generally decreases with twist. With 50*72 

 per cent. iNfi, the magnetization first increases with the twist, 

 attains a maximum, and then decreases. As the tension is 

 increased, the change becomes gradually less. 



Curves (SI { , H)r, T (figs. 40, 41, 42, 43, 44, 45, & 46 

 (PL V.) in full lines) obtained from (&L, t) h , t rise and fall 

 steeply in a very low field, cut the axis of H, become negative, 

 and after passing through rather conspicuous negative maxima, 

 slope away gradually toward the axis, with the increasing- 

 field. SI is numerically greater for a greater twist. With 

 50*72 per cent. Ni, however, 81 for a small twist is always 

 positive, tending to zero as the field increases. 



