re it was before, a mysterious necessity.

Faraday says, speaking of magnetism:

"Such an action may be a function of the ether, for it is not at
all unlikely that if there be an ether it should have other uses
than simply the conveyance of radiations." 3,075. Vol. III.,
Exp. Res.

"It may be a vibration of the hypothetical ether, or a state of
tension of that ether equivalent to either a dynamic or a static
condition," etc. 3,263. Vol. III., Exp. Res.

Faraday again says, speaking of the magnetic power of a vacuum:

"What that surrounding magnetic medium deprived of all material
substance may be I cannot tell, perhaps the ether." 3,277. Vol.
III., Exp. Res.

Modern views would seem to point that through a study of magnetic
phenomena we may take a feeble hold upon the universal ether.
Magnetism is an action or condition of that medium, and it may be that
electrical actions are the expression of molecular disturbances
brought about by ether strains or interferences. The close relations
which are shown to exist between magnetism and light tend to
strengthen such views. Indeed, it would not be too much to expect that
if the mechanics of the ether are ever worked out, we should find the
relation between sensible heat and electric currents to be as close as
that of light to magnetism, perhaps find ultimately the forms of
matter, the elements and compounds to be the more complex
manifestations of the universal medium--aggregations in stable
equilibrium. It is a difficult conception, I confess, and a most
shadowy and imperfect one, yet facts and inferences which favor such
views are not wanting.

Our science of electricity seems almost to be in the same condition
that chemistry was before the work of Lavoisier had shed its light on
chemical theory. Our store of facts is daily increasing, and
apparently disconnected phenomena are being brought into harmonious
relation. Perhaps the edifice of complete theory will not be more than
begun in our time, perhaps the building process will be a very gradual
one, but I cannot refrain from the conviction that the intelligence of
man will, if it has time, continue its advance until such a structure
exists.

I have been led to make these general allusions to electrical theory
in order to emphasize the fact that in the present paper no unraveling
of the mystery is to be attempted, but rather the presentation of some
few considerations upon a