868 ° W. W. Jacques—Diamagnetic Constants of 
a=1— a” 
For obtaining another relation it is best to suspend the bar 
with a’=0 and we then have the position of stable equilibrium 
at the point 0=$z, which gives 
@=—2alpiL[(k,—k,) a? +kJ+ Mk =p, 
whence 
x aI ra 
oer R\ >, ie ww 
Egle tn PME 
1 
these various equations give the complete solution of the 
problem of finding the various coefficients of magnetization. 
Part IL.—By Winuiam W. Jacquzs, Fellow in Physics of 
the Johns Hopkins University. . 
In the foregoing part of this paper there have been deduced 
mathematical expressions for the constants & and ’ both for 
bismuth and for cale-spar crystals. In these expressions 161 
necessary to substitute certain quantities obtained by a series 
of experiments, and it is the purpose of the remaining portion 
of the paper to describe briefly the way in which these quant 
ties were obtained. 
of the time of swing and certain other constants relating 
little bars of the substances experimented upon when suspended 
in this field. 
brass | 
to slide. To this rod were fixed two little set-screws to TT 
Starting now always from ce 
tae through distances a, b and ¢, and the ies © 
.were noted. To each of these deflections was addec sal 
lection due to quickly pulling the coil away from the cen’ 
