f its elasticity or pressure, so the electric potential would
correspond with the elasticity or pressure at the same point.

Thus it is possible to map out the electric field east and west by
ever-increasing and widening circles which would be at lower potential
the further they receded from the sun. So that by carrying out the
electro-magnetic theory of light to its logical conclusion, we are able
to bring the whole of the solar system into line with electric
phenomena; and, as we proceed, we shall see that all other facts
relating to electricity, and magnetism also, are equally as applicable
thereto, otherwise this theory of light must fall to the ground.

That this conception of the universal Aether in its application to solar
space is not extravagant may be proved from the writings of Prof.
Tyndall and Clerk Maxwell. Tyndall, writing on the subject of Faraday's
Lines of Force, says:[26] "The aspect of these curves so fascinated
Faraday that the greater part of his intellectual life was devoted to
pondering over them. He invested the space through which they run with a
kind of materiality, and the probability is that the progress of
science, by connecting the phenomena of magnetism with the luminiferous
Aether, will prove these 'Lines of Force,' as Faraday loved to call
them, to represent a condition of this mysterious substratum of all
radiant action."

While Clerk Maxwell,[27] writing on "Action at a Distance," says: "These
Lines of Force _must not be regarded as mere mathematical abstractions_.
They are the _directions in which the medium is exerting tension like
that of a rope_, or rather like that of our own muscles." I therefore
premise, that both these statements will find a literal fulfilment in
the conception of the Aether advanced and perfected in this work.

[Footnote 25: _Phil. Mag._, 1861.]

[Footnote 26: Tyndall on _Light_.]

[Footnote 27: _Collected Papers_, by Niven.]

ART. 81. _Aether and Induction._--We have seen in the preceding Arts.
that the sun is an electrified body, possessing an electric field, which
field possesses different intensities at different distances from its
surfaces.

If such be the case, the question at once confronts us, as to what is
the effect of such an electrified body with its electric field upon all
the planets which revolve around it; for, if its electric field extends
as far as Neptune, then all the planets and meteors, that revolve
around the sun, must revolv