solar plexus, and sometimes spoken of as the abdominal brain. The cerebro-
spinal system is the channel of our volitional or conscious mental action,
and the sympathetic system is the channel of that mental action which
unconsciously supports the vital functions of the body. Thus the cerebro-
spinal system is the organ of conscious mind and the sympathetic is that of
sub-conscious mind.

But the interaction of conscious and subconscious mind requires a similar
interaction between the corresponding systems of nerves, and one
conspicuous connection by which this is provided is the "vagus" nerve. This
nerve passes out of the cerebral region as a portion of the voluntary
system, and through it we control the vocal organs; then it passes onwards
to the thorax sending out branches to the heart and lungs; and finally,
passing through the diaphragm, it loses the outer coating which
distinguishes the nerves of the voluntary system and becomes identified
with those of the sympathetic system, so forming a connecting link between
the two and making the man physically a single entity.

Similarly different areas of the brain indicate, their connection with the
objective and subjective activities of the mind respectively, and speaking
in a general way we may assign the frontal portion of the brain to the
former and the posterior portion to the latter, while the intermediate
portion partakes of the character of both.

The intuitional faculty has its correspondence in this upper area of the
brain situated between the frontal and posterior portions, and
physiologically speaking, it is here that intuitive ideas find entrance.
These at first are more or less unformed and generalized in character, but
are nevertheless perceived by the conscious mind, otherwise we should not
be aware of them at all. Then the effort of nature is to bring these ideas