Chemistry and Physics. 
The permanent torsions of the 
sary to untwist the wire than to 
twist it. 
4. By repeated turnings of the 
wire, its torsions approximate more 
and more closely to a ed gies om 
ity with the turning weight 
torsions are thereby greater ‘thant in 
the first turning. 
5. By repeated papers ct _ 
twisting and untw Ing 
weights, G. and —G, the maxi- 
rises up to a definite limit. 
. When twisted beyond the lim- 
its ge the repeated torsions and de- 
torsions the wire behaves as if it 
were twisted for the first time. 
7. A twisted wire which is un- 
twisted by the force —-G cannot be 
twisted by repeated action of ie 
: ; 
twists it easily in the first direction. 
8. When a wire which possesses 
@ permanent twistin = si 
brought by the force } to the 
sion B and then farther to the = 
sion C, which lies between Aa an 
be also 0, and B sia be greater 
or smaller than A. 
9. Vibrations during the action 
of a twisting seria increase the 
rsion of on 
“ing currents, J. and —J. 
433 
. The permanent magnetisms of 
the rod increase still more rapidly. 
3. A much weaker counter cur- 
rent is necessary to ie cae the 
bar, gros to magnetize 
4, In‘a case of repaitel magnet- 
‘dike of the bar, its magnetisms 
P 
of the magnetizing currents. 8 
magnetisms are thereby greater than 
in the first magnetization. 
5. By repeated application of the 
mum of magnetism reached in the 
magnetization, sinks, and the mini- 
um of the same emctind in the 
demagnetization rises up to a cer- 
tain limi 
hie en a — the 
Eisite of the repeated magnetiza- 
tions and Rc ccartioce, “hk bar 
were magnetized 
nédiend bar which is 
magnetizes it easily i in 
the first direction. 
* bikes a bar which has the 
permanent magnetism A is is brought 
by the piss b to the —— 
n farther 
magnetism B. In is case A ma 
also be 0, and B may be greater “i 
smaller than A. 
9. Vibrations during the action 
= a magnetizing current, increase 
the magnetism of a bar. 
10. The permanent magnetism 
ack the bar after removing the mag- 
etizing current is on the contrary, 
diminished by vibrations, 
