RESEARCHES IN MAGNETISM. 
591 
Magnetometer (after 
vibration.) 
r 
0 
295 
i 
296i 
2 
2891 
3 
281 
Loading.^ 
4 
275| 
5 
267 
6 
2584 
7 
2491 
r 
8 
236 
7 
239 
6 
243 
Unloading.< 
5 
2461 
4 
253 
1 
265 
0 
2581 
It should be noticed here that a distinct maximum is passed, near the origin, before 
the fall of magnetism caused by increase of load occurs, and a similar maximum 
occurs on the off curve. The off curve lies quite clear of, and below the on curve, and 
the whole operation has resulted in a considerable reduction of magnetism. This is 
because the combined effect of load up to 8 kilos, and vibration has been to harden 
the wire somewhat, although no drawing out was noticed. 
Next the cycle of loads 0-8-0 was again applied, this time without vibration, and 
it is interesting to notice that a passage through a maximum occurred with a load of 
about 2 kilos., a thing which would not have happened if the starting-point had not 
been altered by the previous tapping (see also fig. 36) :—• 
Load. 
Magnetometer. 
0 
2581 
I 
| 
1 
2611 
1 
2 
2631 
1 
3 
262 
Loading. 
4 
259 
5 
254 
6 
2481 
7 
. 2424 
8 
236 
1 
7 
237 
6 
2391 
5 
242 
Unloading.■< 
4 
245 
3 
247 
2 
2501 
1 
254 
0 
259 
4 g 2 
