m a solid to a liquid condition. Here,
then, from the realm of heat we have another argument in favour of the
fact that Aether is gravitative, and therefore possesses mass and
inertia.

In the experiment of reducing the iron ball from a liquid state, so to
speak, to a vaporous condition, we have practically a continuation of
the same process, only that greater heat or greater aetherial motion is
required, and whereas in the previous experiment the molecules of the
ball were acted upon, in this case the atoms are more directly acted
upon by the Aether waves. In all these processes it suggests itself to
me that the aetherial atmosphere must take its share in the expansion
and transformation of the liquid form into a gaseous form, or the solid
into a liquid form. Taking the analogy of our atmosphere in its relation
to the earth, we know that when heat is absorbed by it, it expands, the
result being that a greater pressure is exerted by the expanding
atmosphere, than would be exerted if it remained at the same temperature
all the time. If, therefore, each atom has an aetherial atmosphere,
which is capable of expansion, then the effect of the absorbed aetherial
motion of the heat waves on each atomic atmosphere must be to expand it,
and thus there will be a pressure _away from_ the atom, because of the
increased elasticity acquired by the heated aetherial atmosphere. So
that the expansion of the liquid is due to the increased elasticity of
the aetherial atomic atmosphere, which has been expanded by heat, and
which exerts an increased pressure on neighbouring atoms, thus seeking
to push them farther away from each other. There are other motions of
the atoms themselves in addition to this to be considered, but I am now
seeking to show only the effect of the aetherial atmosphere of each atom
upon the neighbouring atoms. This would give each atom a larger sphere
of freedom in which to move, and that state would then be called a
gaseous and not a liquid one. This assumption of the part which the
aetherial atmosphere plays in the expansion of a body is therefore in
agreement with Professor Challis' theory of heat already referred to, in
which he states that heat gives rise to aetherial vibrations which act
repulsively on the neighbouring atoms. In further confirmation of the
existence of these aetherial atmospheres that exist around atoms, I
would like to draw the attention of the reader to a theory of heat given
to the world by R