¥ 
374 P. E. Chase on Terrestrial Magnetism. 
rious degrees of rapidity, may indicate variations of magnetic 
influence, that can be explained only by the conversion of 
of the proposed solutions have been satisfactory to the learned 
philosopher who first started the discussion. 
‘orces. 
We speak, indeed, of weight, as if it could be predicated only 
of bodies at rest, and as if it were so entirely distinct from mo- 
apparently an impossible condition of matter, for, to whatever 
extent the action of opposing forces may be relatively neutral- 
ized. 
the same, whether the particle fall freely for any given time, oT 
remain apparently at rest. All the potential energy which 1s 
cr eh Mag., [4], xv, 81. 
_* The potential energy of gravity is represented by g = 32 ft. per second 
. The 
earth's rotation allowing only about 54, of this amount, or *1107 ft. per second, to 
be converted into actual energy the remainder must be employed G overcoming: 
4 242 ee 
- 2 molecular elasticity. The formula a=(“* )s gives 26,221 miles as the radius 
tan’ oscil 
: ions, it may perhaps be possible to reconcile the sev” 
s of Newton, Faraday, ah and Challis, respecting the nature 
ag., [4], xiii, 281-7, and xviii, 447, 9q9- 
See Phil. Mag 
