ly it is probable, that the nonconducting matter has also its
relations to, and is affected by, the disturbing cause, though we have not
yet discovered them. Again and again the relation of conductors and
non-conductors has been shown to be one not of opposition in kind, but only
of degree (1334, 1603.); and, therefore, for this, as well as for other
reasons, it is probable, that what will affect a conductor will affect an
insulator also; producing perhaps what may deserve the term of the
electrotonic state (60. 242. 1114.).

1662. It is the feeling of the necessity of some lateral connexion between
the lines of electric force (1114.); of some link in the chain of effects
as yet unrecognised, that urges me to the expression of these speculations.
The same feeling has led me to make many experiments on the introduction of
insulating dielectrics having different inductive capacities (1270. 1277.)
between magnetic poles and wires carrying currents, so as to pass across
the lines of magnetic force. I have employed such bodies both at rest and
in motion, without, as yet, being able to detect any influence produced by
them; but I do by no means consider the experiments as sufficiently
delicate, and intend, very shortly, to render them more decisive[A].

[A] See onwards 1711.--1726.--_Dec. 1838._

1663. I think the hypothetical question may at present be put thus: can
such considerations as those already generally expressed (1658.) account
for the transverse effects of electrical currents? are two such currents in
relation to each other merely by the inductive condition of the particles
of matter between them, or are they in relation by some higher quality and
condition (1654.), which, acting at a distance and not by the intermediate
particles, has, like the force of gravity, no relation to them?

1664. If the latter be the case, then, when electricity is acting upon and
in matter, its direct and its transverse action are essentially different
in their nature; for the former, if I am correct, will depend upon the
contiguous particles, and the latter will not. As I have said before, this
may be so, and I incline to that view at present; but I am desirous of
suggesting considerations why it may not, that the question may be
thoroughly sifted.

1665. The transverse power has a character of polarity impressed upon it.
In the simplest forms it appears as attraction or repulsion, according as
the currents are in the same or dif