ON THE MEASUEEMENT OF MAGNETIC HYSTERESIS. 
91 
Ho. 
4-524 
11-00 
16-24 
m . 
•741 
1-20 
1-36 
•353Hb . . . 
. 
•750 
1-17 
1-42 
so that the straight parts are given by 
W = -353^0 (Bo + 600) - 950 . 
The curves just described differ in two important particulars from the curves for 
torsion in fig. 10. In the case of torsion the straight parts of the curves correspond to 
large stresses and the hooks to small stresses, but in the case of tension the straight 
parts correspond to small stresses and the hooks to large stresses; the hook is more¬ 
over much more developed in the curves for tension than in the curves for torsion. 
The second point of difference is that the tension curves lie to the right of the 
W - Bo curve for zero stress whereas the torsion curves lie to the left. 
