242 W. A. Norton on Molecular Physics. 
Let us next inquire into the true nature of the electric polari- 
zation of molecules. se 
A molecule becomes polarized whenever, from any cause, & 
portion of its electric atmosphere is urged around from one side 
to the opposite side; where there is an excess, the polarity — 
the other of the atom ; in addition to this, a certain quantity of 
the ether is detached, or expelled from the atmosphere on the 
positive side, anda corresponding amount absorbed into it on the , 
negative side. Accordingly, when a molecule is being polarized, Lath 
when tls polarization is increasing, there is a flow of electrit ether 
toward tts negative side, and away from its positive side. the 
other hand, when a polarization once acquired is falling off, there % 
a flow, or an electric current, in the opposite direction. ‘To make this — 
more evident, let S (fig. 6) be a ; 
surface receiving a charge of pos- 
itive electricity, and a, b 
’ rs 
and the farther side positively ; but the same force will urge 
interstitial ether toward a, and the augmented attraction of t 
tween a and 3, and polarize 4, just as (Polaris a. sd 
chain of particles will therefore become polarized in success ae 
and at the same time there will be an electric movement, 4 
ferent instances e different effects 0 ae 
it i | of combination, will be briefly considered under the hea 
cal union. | 
The va ried forms of crystallization assumed by different substances, by 
dome. a poet! gee degree, the diversity the 
the indivi ecules of whic 
pound Weelidiilie connat | | 
