to walk with
difficulty. Accordingly, and in consequence of its connection with the
cerebrum, subcortical center and the spinal cord, the cerebellum is a
station of the muscular and of the chief nervous system, by means of
both of which qualities we keep our equilibrium. The more massive
cerebellum with woman, together with the comparative shortness and
tenderness of her bones, explains her comparative quickness and easiness
of motion, her quicker and higher co-ordination of the muscles for their
functions, and her knack of quickly sizing up a situation, and finding
her way in the midst of a confusion of associations. Woman is
furthermore aided in the latter faculty through the greater excitability
of her cerebral cortex. Meynert says:--

1. All structural anomalies associated with anaemia of the
blood--including also a small heart and narrow arteries--should be
considered as subject structural defects. Upon this depends not only the
ready exhaustibility of the cortex, but also the phenomena of
irritability, named by Meynert, localized irritable weakness.

2. The branches of blood vessels, supplying the subcortical centers from
the base, are short, thick, straight, palisade-like, while those on the
surface of the brain, supplying the cortex, run in long tortuous lines.
And it is because of that, since with the increased length of the blood
vessels the resistance to the propulsive force of the heart is
increased, that the subcortical centers, the moment fatigue supervenes,
are better supplied with blood than the cortex, they are less readily
fatigued than the more readily exhaustible cerebrum.

3. Because of this and because of the more watery character of woman's
blood and great extent of subcortical centers in woman in comparison
with cerebrum, the physical equilibrium of woman is more unstable than
of man.

4. All nerves (except the optic and olfactory, which spread out directly
in the cortex, save some of their filaments terminating in the
subcortical centers) terminate in the subcortical center; the cortex of
the cerebrum acts as a checking organ for the subcortical center; as the
cerebral cortex in woman, as already stated, is at a disadvantage not
only from the anatomical standpoint, but also in the quality of its
blood supply, woman is not only more easily fatigued, but also more
readily excitable (irritable, nervous).

These facts explain, on the one hand, what is called the superior
endowment of woman, a