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 the question of the size and constitution of the brain. (It should be observed that all these distinctions of sex show themselves more or less from birth onwards.)

Specialists are agreed that at all ages the size of the brain of woman is less than that of man. The difference in relative size is greater in proportion according to the degree of civilisation. This is noteworthy, as it would seem as though the brain of man grew with the progress of civilisation, whereas that of woman remains nearly stationary. The average proportion as regards size of skull between the woman and man of to-day is as 85 to 100. The weight of brain in woman varies from 38½ oz. to 45½ oz.; in man, from 42 oz. to 49 oz. This represents the absolute difference in weight, but, according to Dr de Varigny, the relative weight—i.e. the weight in proportion to that of the whole body—is even more striking in its indication of inferiority. The weight of the brain in woman is but one-forty-fourth of the weight of the body, while in man it is one-fortieth. This difference accentuates itself with age. It is only 7 per cent in favour of man between twenty and thirty years; it is 11 per cent. between thirty and forty years. As regards the substance of the brain itself and its convolutions, the enormous majority of physiologists are practically unanimous in declaring that the female brain is simpler and