1912-13.] Electrical Resistance and Magnetization of Nickel. 207 
field acting cyclically when the longitudinal field (h) is maintained. These 
changes will be represented by the notation H, H(T), T, and T(H). Thus 
H(T) means the result as regards resistance change due to the longitudinal 
field (h) acting on what might be called the T-condition. 
These reductions to the change per 100,000 of the branch of the Wheat 
stone bridge containing the nickel strip are given in practically chronological 
order in the Appendix. The last or unit figure in these numbers is of course 
quite within the errors of observation. In the final reductions this last 
figure is omitted and the changes of resistance are estimated per 10,000. The 
reductions to changes of resistance of the nickel itself are given in Table A. 
These numbers a, re obtained from the numbers in the Appendix by division 
by the number 0*791. 
Table A. 
The tabulated numbers are changes of unit resistance x 10 4 . 
Longitudinal 
Fields. 
1 
Transverse Fields. 
| 
50 
110 
170 
270 
430 
580 
700 
815 
106 
H 
+ 12 
+ 9 
+ 13 
+ 11 
+ 12 
+ 11 
+ 8 
+ 11 
I. 
T(H) 
-10 
-48 
- 78 
- 90 
-102 
-106 
- 108 
-108 
T 
- 13 
-35 
- 64 
- 75 
- 84 
- 88 
- 88 
- 91 
H(T) 
+ 10 
+ 3 
0 
0 
- 1 
- 1 
- 2 
- 2 
17-7 
H 
+ 23 
+ 24 
+ 23 
+ 26 1 
+ 23 
+ 26 
+ 22 
+ 25 
II. 
T(H) 
- 15 
-57 
- 91 
-112 
-116 
-124 
-125 
-112 
T 
-12 
-42 
- 64 
- 75 
- 88 
- 89 
- 89 
- 88 
H(T) 
+ 19 
+ 19 
+ 2 
0 
+ 1 
- 3 
- 2 
- 3 
28 
H 
+ 39 
+ 40 
+ 38 
+ 37 
+ 38 
+ 39 
+ 37 
+ 39 
III. 
T(H) 
-15 
-65 
-106 
- 126 
- 131 
- 147 
-144 
-157 
T 
-n 
-42 
- 63 
- 77 
- 86 
- 87 
- 87 
- 92 
H(T) 
+ 32 
+ 19 
+ 5 
0 
- 3 
- 5 
- 6 
- 4 
37 
H 
+ 52 
+ 49 
+ 49 
+ 58 
+ 62 
+ 50 
+ 49 
+ 47 
iv: 
T(H) 
-29 
-66 
-112 
-144 
-154 
-159 
- 162 
-160 
T 
- 11 
-41 
- 64 
- 88 
- 90 
- 92 
- 93 
- 92 
H(T) 
+ 42 
+ 26 
+ 10 
— 2 
- 5 
- 7 
- 6 
— 7 
47*4 
H 
+ 61 
+ 58 
+ 58 
+ 60 
+ 60 
+ 59 
+ 61 
Y. 
T(H) 
-71 
-124 
-154 
-168 
-172 
-178 
-184 
T 
-35 
- 65 
- 78 
- 88 
- 91 
- 91 
- 94 
H(T) 
+ 21 
+ 13 
- 8 
- 12 
- 12 
- 14 
- 12 
57 
H 
+ 61 
+ 66 
+ 55 
+ 67 
+ 75 
+ 53 
+ 63 
+ 67 
VI 
T(H) 
-28 
-85 
-121 
-192 
-187 
-182 
-195 
-184 
T 
- 13 
-40 
- 67 
- 84 
- 95 
- 91 
- 95 
- 93 
H(T) 
+ 39 
+ 31 
+ 16 
0 
- 16 
- 17 
- 16 
- 16 
1 (1) 
(2) 
' 
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