56 Dr. Hare on thé Thevries,of Electrical’ Phenomena. 
if the oe of the wire:be inexeased, the surface; proportionally 
augm nables more of the ethereal waves to ‘pass superfi- 
cally, Dredlicing roe nally less ethereo-ponderable undula- 
© Mosasticth, bye stationary, as in magnetic needles sad pe 
yermanent magnets, appears to be owing to an enduring polariza-_ 
tion of the si iaiadh, A atoms, like that transiently produ- 
ced by a galvanic discharge. (Note, page 230, vol. v, and para- 
graph 68. 
The magnetism transiently exhibited by a galvanized wire, is 
dtie to oppositely polarizing impulses, severally proceeding wave- 
like to an intermediate pat of the. circuit ‘where reciprocal neu-: 
cet ensues. 
n magnetism is produced by a frictional discharge. opera-. 
ting zen a conducting wire, it must be deemed a secondary effect, 
arising from the polarizing influence. ss ume ethereal waves upon 
the ethereo-ponderable atoms of the w 
_ Such waves pass superficially in Bene but when the 
wire is comparatively small, the reaction between the waves and 
ethereo-ponderable atoms becomes sufficiently powerful to polar- 
ize them, and thus render them competent, for an extremely mi- 
nute period of time, to produce all the affections of a galvano- 
fre current, whether of ignition, of electrolysis or magnetiza-. 
Thus 
us, as the ethereo-ponderable waves produce such as 
are gees ethereal, so ney ethereal waves may peodiee stich 
as are ethereo-pondera 
The. polarization of hes upon electrified. scalps is suppose to 
be due to a superficial association with the surrounding polarized 
ethereal atoms, while that of iron filings, by a magnet or galvan- 
ized wire, is conceived to atise from the influence of polarized 
ethereo-ponderable atoms, ns of ethereal and ponderable 
matter in a state of combin: 
Faradian discharges are as ats the efieets of ethereo-ponderae 
ble polarization, as those from an electrified conductor, or coatet 
surfaces of glass, are due to static ethereal Bele ie 40, 
; last paragraph, note, p. 346. 
It is well known that if a rod of ish be included in a coil of 
coated copper wire, on making the coil the medium of a voltaic 
discharge, the wire is magnetized. Agreeably toa communica- 
tion from Joule, in the L. and E. Phil. Mag. and Jour. for Feb., 
1847, the bar is at the same time lengthened, without any aug- 
ihentatiod of bulk; so that its other dimensions must be lessened. 
in proportion to the elongation. 
_ All these facts tend to prove that a change in the relative ‘posi- 
tion of the constituent ethereo-ponderable atoms of iron, aceom- 
panies its sie either as an immediate, ease, Jorge a 
seliateral effe neyo 
