mass may be doubled, and in that case
the density of the electricity would be halved, but as long as the mass
remained the same, the quantity of electricity would remain the same
also. So that we learn from this reasoning that the mass of a body, and
quantities of electricity on that mass, are always proportionate to each
other, because of the fact that Aether is gravitative, and also has an
electro-magnetic basis.

If we wanted further evidence of the hypothesis that has just been
advanced, such evidence is to be found in the hypothesis suggested by
Faraday as to the electro-chemical equivalents of all elements.
According to this hypothesis every element has its exact
electro-chemical equivalent, or definite quantities of electricity are
to be found in association with each and every particular atom of each
element. Writing on the subject in his _Exp. Res._, par. 852, he says:
"The theory of definite electro-chemical action appears to me to touch
upon the absolute quantity of electricity or electrical power belonging
to different bodies. Although we know nothing of what an atom is, yet we
cannot resist forming some idea of a small particle which represents it
to our mind, and though we cannot say what electricity is, so as to be
able to say whether it is a particular matter or matters, or mere motion
of ordinary matter, yet there is immensity of facts which justify us in
believing that the atoms of matter are in some way endowed or associated
with electrical powers to which they owe their most striking qualities,
and amongst them their chemical affinity." Further, in Art. 857, he
states: "I can have no doubt that, assuming hydrogen as 1, and
dismissing small fractions for the simplicity of expression, the
equivalent number or atomic weight of oxygen is 8, of chlorine 36, of
bromine 78.4, and of lead 103.5, etc., notwithstanding that a high
authority doubles several of these numbers."

Then, writing upon the definite relationship of these equivalents in
compounds, he states (Art. 835): "Electro-chemical equivalents are
always consistent, that is, the same number which represents the
equivalent of a substance _A_ when it is separating from a substance _B_
will also represent _A_ when separating from a third substance _C_. Thus
8 is the electro-chemical equivalent of oxygen, whether separating from
hydrogen, tin, or lead; and 103.5 is the electro-chemical equivalent of
lead, whether separating from oxygen, or chlorine, o