ction as a distinct magnet, having its own positive and
negative poles. And, all the way through, these sectional magnets will
be arranged with the positive pole of the one joined to the negative
pole of the next in advance of it.

It is just so in respect to the magnetic circuit of a moving current.
The whole circuit, as before remarked, is in reality one long magnet.
But in applying the terms _positive_ and _negative_ in our practice we
often view the whole circuit--the one long magnet--as composed of a
series of shorter ones, arranged with positive and negative ends in
contact; and all the way the current in each section is supposed to be
running from the positive pole of the magnet behind to the negative pole
of the magnet before.

We consider the circuit, from the positive post around to the negative
post, as composed of three magnets, as follows: Magnet No. 1, which
extends from the positive post, along the cord and electrode, to the
body of the patient, where the positive electrode is placed. The
_negative pole_ of this magnet is the _wire end of the cord_ placed in
the positive post, and its _positive_ pole in the _positive electrode_
placed upon the person of the patient. No. 2, which is composed of the
parts of the patient traversed by the current between the two
electrodes. Its negative end or pole is the part in contact with the
positive pole of magnet No. 1, and its positive pole is the part in
contact with the negative pole of magnet No. 3. No. 3 extends from the
positive pole of No. 2, through the electrode and along the cord, to the
negative post. Its negative pole is the _negative electrode_ in contact
with the positive end or pole of magnet No. 2, and its positive pole is
the _wire end of the cord_ in the negative post.

Since in every magnet the magnetic fluid is supposed to be regularly
graduated from minimum quantity in the negative end to maximum quantity
in the positive end, this is true in respect to the one magnet,
consisting of the whole magnetic circuit, as well as in respect to each
one of the sectional series. Consequently there must be the same
quantity of magnetism in each negative pole of the sections as there is
in the positive pole of the section immediately behind it. And the
magnetism of the whole circuit between the positive and the negative
posts is in its _least_ volume next to the _positive post_, and in
_fullest_ volume next to the _negative post_. If we consider the circuit
a