80 
SIR WILLIAM THOMSON ON THE 
Table IV. — Bar of Wrought Nickel.—continued. 
Operations. 
+ M 
285 lbs. on 
„ off 
„ on 
„ off 
B 
285 lbs. on 
,, off 
„ on 
„ off 
-M 
285 lbs. on 
„ off 
„ on 
„ off 
B 
285 lbs. on 
„ off 
„ on 
„ off 
+ M 
285 lbs. on 
„ off 
„ on 
„ off 
B 
285 lbs. on 
„ off 
,, on 
„ off 
-M 
285 lbs. on 
„ off 
„ on 
„ off 
B 
285 lbs. on 
„ off 
„ on 
„ off 
+ M 
285 lbs. on 
„ off 
„ on 
„ off 
B 
285 lbs. on 
„ off 
„ on 
„ off 
Zero changed to 
-M . . 
285 lbs. on . 
„ off . . 
Leadings. 
Zero 554. 
Differences. 
Total 
magnetization. 
Strength, of 
magnetizing 
current. 
340 
-215 
+ 214 
62 
367 
+ 27 
+ 187 
332 
— 35 
+ 222 
363 
+ 31 
+ 191 
329 
- 34 
+ 225 
388 
+ 59 
+ 166 
426 
+ 38 
+ 128 
403 
- 23 
+ 151 
427 
+ 24 
+ 127 
404 
- 23 
+ 150 
863 
+ 459 
-309 
147 
832 
- 31 
-278 
864 
+ 32 
-310 
833 
- 31 
— 279 
864 
+ 31 
-310 
745 
-119 
-191 
690 
— 55 
-136 
716 
+ 26 
-162 
689 
- 27 
-135 
716 
+ 27 
-162 
226 
-490 
+ 328 
147 
260 
+ 34 
+ 294 
227 
- 33 
+ 327 
260 
+ 33 
+ 294 
226 
- 34 
+ 328 
343 
+ 117 
+ 211 
400 
+ 57 
+ 154 
370 
- 30 
+ 184 
400 
+ 30 
+ 154 
371 
- 29 
+ 183 
953 
+ 582 
-399 
282 
927 
- 26 
-373 
950 
+ 23 
-396 
925 
- 25 
-371 
950 
+ 25 
-396 
777 
-173 
-223 
715 
- 62 
-161 
746 
+ 31 
-192 
715 
- 31 
-161 
744 
+ 29 
-190 
155 
-589 
+ 399 
282 
181 
+ 26 
+ 373 
156 
- 25 
+ 398 
182 
+ 26 
+ 372 
156 
- 26 
+ 398 
327 
+ 171 
+ 227 
388 
+ 61 
+ 166 
357 
- 31 
+ 197 
388 
+ 31 
+ 166 
358 
- 30 
+ 196 
500 
Difference 
from zero 
940 
440 
-440 
432 
925 
- 15 
-425 
940 
+ 15 
-440 
