434 
11. A wire twisted and then un- 
twisted loses or gains torsion by vi- 
bration according to the magnitude 
of the detorsion. 
12. The permanent torsion of 
wires diminishes by their mag- 
netization, and that in a ratio which 
iminishes as the magnetism in- 
3. Repea 
the same none Soareon dimin- 
netization in n the opposite direction 
to the first produces howev 
strong diminution of the torsion. 
ection a maxi- 
m, by magnetization in the oppo- 
ae direction a minimum of torsion. 
15. A twiste 
been partially untwisted, loses by 
magnetization much less of its twist 
lan an ordinary twisted wire. 
wire farther untwisted, exhibits on 
feeble magnetization at first an in- 
crease of its torsion, which by aug- 
menting the magnetization rises to 
was untwisted, the stronger must 
the prea in order to reach 
this maxim pag wire is 
ais diontls untwisted, its t 
while under the influence of the 
twisting weight, its torsion increases 
by w cake, = ishes by stronger 
17, x wire ‘viele at the ordi- 
nary temperature loses torsion b 
heating, and on coo sooling gain: te- 
covers a portion of its loss. The 
inerease with —- 
torsion. After repeated changes of 
Scientific Intelligence. 
11. A magnetised and then de- 
magnetized bar loses or gains mag- 
netism by vibration, according t 
the magnitude of the demagnetiza- 
tion. 
e permanent magnetism 
of antl bars sce by their 
torsion and that in a ratio which 
diminishes as a torsion increases. 
13. Re aco torsions in the same 
direction dimini e ma 
of a steel bar but little. 
in a direction opposite to the first, 
produces, however, a new strong 
diminution of the magnetism. 
. When a bar by repeated 
twisting and untwisting is demag- 
netized as far as this is possible by 
torsion within: definite limits, it. as- 
magnetized, exhibits on feeble tor- 
sion, at first, an increase of magnet- 
ism which on increasing the torsion, 
s to a maximum and then again 
dliminiehiéx The more strongly the 
maximum, When the bar is very 
strongly a the magneti- 
zation increases e up to the ap- 
= “ hake aol torsions. 
1 a steel bar is twisted 
when swt saa influence of a mag- 
netizing current, its ma etism in- 
creases by weaker, diminishes by 
ee ae torsion. 
. A bar siassntinal at the or- 
aoa temperature, loses magnetism 
by heating, and on cooling recovers 
a portion of its loss. The changes 
- ee to the magone, 
After repeated changes 
