oxygen, that agent which makes vital manifestation possible.
This temperament exhibits greater sensibility, the conceptions are
quicker, the imagination more vivid, the appetite stronger, the passions
more violent, and there is found every display of animal life and
enjoyment.

A full development of the basilar faculties, indicated by an unusual
breadth and depth of the base of the brain, accompanies this
temperament. Its cerebral area includes the posterior and inferior
portions of the cerebrum, the entire cerebellum, and that part of the
medulla which connects with the spinal cord, all of which sustain
intimate relations to vital conditions. Accordingly, such a development
indicates good digestion, active nutrition, vigorous secretion, large
heart and lungs, powerful muscles, and surplus vitality. The violent
faculties, such as Combativeness, Destructiveness, and Hatred, are
natural adjuncts, and their excess tends to sensuality and crime. They
are not only secretive, appropriative, selfish, and self-defensive, but
when redundant are aggressive and tend to destructiveness, the
gratification of animal indulgence, intemperance, and debauchery. The
correspondence between the cerebral conformation and the physical
development is very obvious. Lower orders of animals possess these
faculties, and their spontaneous exhibition is called instinct. They
possess the acquisitive, destructive, and propagative propensities,
which lead them to provide for their wants and secure to themselves a
posterity. The exercise of their bodies causes a continual waste which
demands incessant reparation, and they are governed measurably by these
animal impulses.

All of these lower psychical faculties have a physiological
significance. Acquisitiveness functionally expresses assimilation,
accretion, animal growth, and tends to bodily repletion. Secretiveness
expresses concealing, separating, withdrawing, and functionally
signifies secretive action. Secretion is the separating and withdrawing
from the blood some of its constituents, as mucus, bile, saliva, etc.
This latter process indicates complex conditions of organization, so
that the higher and more complex the tissue, the greater the number of
secretory organs. Unrestrained selfishness, while it naturally conserves
the individual interests, in its ultimate tendencies, is the very
essence of human depravity. Without qualification, clearly, it is crime,
for blind devotion to the individual