ely, if the blood
be destroyed, or its vitality reduced, in the same proportion will the
mental energies be weakened and all the functional powers of the
physical system enfeebled. In brief, if the intellect be unduly
exercised, the red corpuscles of the sanguine fluid will be gradually
destroyed, and the serum allowed to predominate. The blood becomes weak
and watery, the subject is nervous, dropsical, consumptive and
derangement of the important functions follows almost invariably.
Excessive intellectual activity often produces weak state of the system,
and the person thus affected becomes languid, spiritless, and an easy
prey to disease. This mental cause and its bodily results may be
classified in the following order. Mental Cause: EXCESSIVE MENTAL
EXERTION, which produces _waste of the brain substance and blood_.

/ VITAL EXPENDITURE,
Bodily results: { ANAEMIA,
\ A WEAK CONDITION.

This kind of waste is best summed up in the words, VITAL EXPENDITURE.
Upon the forehead, as represented in Fig. 72, we will therefore inscribe
INTELLECT, ACTIVITY, and VITAL EXPENDITURE. Intellectual employment is
usually accompanied by sedentary habits, neglect of healthful exercise,
and a deprivation of pure air, to all of which ill health may be
attributed. Were the intellectual expenditure arrested, and the forces
turned into recuperative channels, many a person would become beautiful
with the ruddy glow of health. Without health there is no use for
thought; cultivation of the mind is just as natural and essential as the
culture of the body, and the trained development of both is needed for
mutual improvement.

EMOTIVE FACULTIES.

[Illustration: Fig. 72.]

What results follow the _natural_ and the _excessive_ exercise of the
EMOTIVE FACULTIES? AS distinct organs of the body have diverse
functions, so, in like manner, different parts of the brain perform the
separate operations of the mind. It is easier to discriminate between
the products of these dissimilar endowments than to determine the
location of the faculties. The intellect deals with concrete subjects,
and the emotions with abstractions; the intellect is exercised with
material things, the emotions dwell upon attributes; the intellect
considers the forces of matter, the emotions, the powers of the soul;
the former deliberates upon the truths of science, the latter is
concerned with duties, obligations, or moral respons