290 Proceedings of tlie Royal Society of Edinburgh. [Sess. 
each cooling resulted in an increase in the magnetic moment of nearly 
40 per cent. 
The results obtained for the material in the annealed condition are 
shown in fig. 2. 
I 
1 
~ ■ 1 
1 
1 
1 ____ 1 
1 
1 
1 
1 
1 
1 
1 
1 
1 
i 
i 
i 
i 
i i 
i i 
i i 
j 
i 
i 
i 
1 
1 
I 
1 
1 
1 
1 
1 
1 
1 
1 
1 
1 
r 
i 
i 
i 
i 
i 
i 
i 
i 
i 
L 
i i 
i : 
J ‘ 
i 1 
! 
I 
I 
l 
1 
1 
1 
1 
t — — — 
1 
1 
1 
i 
Specimen Magnetised at 15° C. Specimen Magnetised at -190° C. 
Steel Wire (Annealed) 
Fig. 2. 
Specimen in Quenched Condition. — (1) Specimen magnetised at room 
temperature. — The effect of the first cooling was to diminish the magnetic 
moment by about 2*5 per cent., and on warming to room temperature a 
Steel Wire (Quenched) 
Fig. 3. 
further reduction of 3 - 5 per cent, took place. Further cooling always 
resulted in an increase in the magnetic moment of nearly 1 per cent. 
(2) Specimen magnetised at —190° C. — The effect of allowing the speci- 
