It seems fair, therefore, to assume that the brain-weights of big men of the Zulu, the Xosa and the Fingo tribes will be considerably above those of European women, but to conclude from this that the capacity of the big black man is higher than that of the average white woman would hardly be possible to-day.  I would say here that I do not accept the suggestion, recently advanced, that the mental faculty of woman is qualitatively different from that of man.  I hold that there is no difference of any kind between the intellectual powers of the male and female human being.  The comparative lack of mental achievement on the part of women in the past I believe to have been due to a natural, and, as I think, wholesome feminine disinclination to take up intellectual studies and scientific pursuits that until recently have been deemed the prerogative of men, and not to any innate inferiority of the female brain.

According to Professor Sollas, whose high authority cannot be disputed, the size of the brain when looked at broadly seems to be connected with the taxinomic rank of the race, but when we come to details the connection between cranial capacity and mental endowment becomes less obvious.  The Eskimo, for instance, who is of short stature, has a cranial capacity of 1,550 cubic centimetres, thus surpassing some of the most civilised peoples of Europe, and yet no one of this race has so far startled the world with any kind of mental achievement.  “The result,” says Professor Sollas, “of numerous investigations carried out during the last quarter of a century is to show that, within certain limits, no discoverable relation exists between the magnitude of the brain—­or even its gross anatomy—­and intellectual power,” and he illustrates this statement by a list giving the cranial capacities and brain-weights of a number of famous men which shows that though Bismarck had a skull capacity of 1,965 cubic centimetres, Liebniz, who attained to the highest flights of genius, had a cranium measuring only 1,422 cubic centimetres.

Dealing more particularly with the assumed relation between highly specialised mental faculties and the anatomy of the brain, as apart from its mere size, the same author cites the case of Dr. Georg Sauerwein, who was master of forty or fifty languages, and whose brain after his death at the age of 74 in December, 1904, was dissected by Dr. L. Stieda with the idea that, since it is known that the motor centre for speech is situated in what is called Broca’s area, some connection between great linguistic powers and the size or complication of the frontal lobe might be found in this highly specialised brain, but the examination revealed nothing that could be correlated with Sauerwein’s exceptional gift.[9]