explained in Art. 91. It might have been urged in the case
of the planet's revolution round the sun being in the same direction as
the sun's axial action, that such a fact was merely a coincidence, but
such an objection loses its force if it is proved that the same
principle or truth when applied to other bodies equally holds good. When
we come to analyze the direction of the satellites round their primary
planets, we find that each satellite has an orbital motion, or is
carried round its central and controlling planet by that planet's Aether
currents in exactly the same direction that the planet rotates on its
axis, viz. from west to east. So that we have in the orbital direction
of the satellites, as we have also in the orbital direction of the
planets, conclusive evidence of the existence and mode of working of the
Aether and of the electro-magnetic currents generated in that aetherial
medium by the electro-magnetic bodies which rotate in it.

CHAPTER XI

AETHER AND KEPLER'S LAWS

ART. 102. _Aether and Kepler's First Law._--In Art. 26 we learned that
according to the First Law of Kepler, each planet revolves round the sun
in an elliptic orbit, with the sun occupying one of the foci.

We also saw that that elliptic orbit was produced according to Newton by
the conjoint working of the centripetal and centrifugal forces in
association with the three Laws of Motion, to which laws had to be added
a corollary, which is termed the Parallelogram of Forces, before the
First Law of Kepler could be fulfilled.

In making any hypothesis as to the physical cause of Kepler's Laws, if
it can be shown that the same aetherial medium that gives rise to the
centrifugal force, also gives rise to the centripetal force, and that
the same medium by its rotatory motions also fulfils the three laws of
motion, and gives a satisfactory physical explanation of all Kepler's
Laws; then, according to our three Rules of Philosophy, we shall have
found a physical medium which, by its motions and pressures and
tensions, can give rise to all the phenomena exhibited in the celestial
mechanism. Such a physical explanation will be philosophically correct,
in that it is simple in its conception, is entirely in harmony with
observation and experiment, and satisfactorily accounts for, and that on
a physical basis, all the phenomena associated with the whole of the
celestial mechanism.

We