346 Dr. Hare on the Theories of Electrical Phenomena. 
tuted of ethereal and ponderable particles, may be designated as 
ethereo-ponderable atoms.* 
9. uiescent charge of frictional electricity, only affecting 
the superficies of any ponderable mass with which it may be 
associated, and having no influence upon the component ethereo- 
ponderable atoms severally, is not to be ascribed to redundan- 
cies or deficiences of the ethereal matter, but to different states 
of polarization produced in different sets of the particles of such 
matter existing about the electrifiable bodies.t During the action 
of an electrical machine, these particles are polarized by the op- 
posite polarities transiently induced in the surfaces subjected to 
friction ; one set of particles going with the electric, the other 
remaining with the rubber. 
. The particles thus oppositely polarized, severally divide 
their appropriate polarities with other ethereal matter surrounding 
the conductors, and this, when insulated, is retained until a fur- 
ther polarization results from the same process. Thus are the 
ethereo-electric atmospheres respectively surrounding the positive 
and negative conductors oppositely polarized, and consequently 
charged to the degree which the machine is competent to induce. 
er these circumstances, if a conducting rod be made to form 
between them a communication, by touching each conductor 
with one of its ends, the polarities of the ethereo-electric atmos- 
pheres by which they are severally surrounded, propagate them- 
selves, by a wave-like process, over and more or less through the 
rod, according to its nature and dimensions, so as to meet inter- 
mediately, and thus produce reciprocal neutralization. ; 
When the oppositely polarizing waves, generated by frie- 
tion, as above described, are by means of a conducting communl- 
- eh Ps pons has been brought to uphold the undulatory theory of light— 
of electricity when at rest, as when accumulated upon conductors or the surfaces 
of panes or jars. enomena which are supposed to arise from electricity in m0- 
tion (forming a current), are designated as dynami s when ag or 
side of a pane produces the opposite state in the other, the effect upon the latter 
is ascribed to statical induction; but when a di of electricity th bard 
Wire, causes a current in another, forming an adjacent circuit, the result is ascribed 
to mic induction. This met esignation is employe er the 
alleged current be owing to electricity generated b as in f 
machine, or generated by ical , as in of a galv ery? 
ase anic batte 
A good word is wanting to distinguish electricity, when produced by fricti@e 
from electricity produced by abet per reaction : 8 go Bd nme 
ss " oad fi . * l, hi bh as vantage # 
that employed by 
tory. 
*. 
