nd, on the other, her inclination to sudden changes
of opinion, as well as to hallucinations and illusions. This state of
unstable equilibrium between the _dura mater_ and the _pons_ becomes
particularly normal during menstruation, pregnancy, lying-in, and at her
climacteric. As a result of her physical organization, woman is more
inclined to melancholy than man, and likewise is the inclination to
mental derangement stronger with her; on the other hand, the male sex
excels her in the number of cases of megalomania.

Such, in substance, is the information furnished us by the authority
whom we have been quoting.

As a matter of course, in so far as the cited differences depend upon
the nature of the sex-distinctions, they can not be changed; in how far
these differences in the make-up of the blood and the brain may be
modified by a change of life (nourishment, mental and physical
gymnastics, occupation, etc.) is a matter that, for the present, lies
beyond all accurate calculation. But this seems certain: _modern woman
differs more markedly from man than primitive woman, or than the women
of backward peoples, and the circumstance is easily explained by the
social development that the last 1,000 or 1,500 years forced upon woman
among the nations of civilization_.

According to Lombroso and Ferrero, the mean capacity of the female
skull, the male skull being assumed at 1,000, is as follows:--

Negro 984 Slav 903
Australian 967 Gipsy 875
Hindoo 944 Chinese 870
Italian 921 German 838-897
Hollander 919 (Tiedemann) Englishman 860
Hollander 883 (Davis) Parisian 858

The contradictory findings for Hollanders and Germans show that the
measurements were made on very different quantitative and qualitative
materials, and, consequently, are not absolutely reliable. One thing,
however, is evident from the figures: Negro, Australian and Hindoo women
have a considerably larger brain capacity than their German, English and
Parisian sisters, and yet the latter are all more intelligent. The
comparisons established in the weight of the brain of deceased men of
note, reveal similar contradictions and peculiarities. According to
Prof. Reclam, the brain of the naturalist Cuvier weighed 1,861 grams, of
Byron 1,807, of the mathematician Dirichlet 1,520, of the celebrated
mathe