[Footnote A: _Note on human hermaphroditism_: This subject has been treated in a considerable medical literature. See, for example, Alienist and Neurologist for August, 1916, and New York Medical Journal for Oct. 23, 1915. It has been claimed that both human and higher mammalian "hermaphrodites" have actually functioned for both sexes. Obviously, absolute certainty about cause and effect in such cases, where human beings are concerned, is next to impossible, because of lack of scientific, laboratory control. If a case of complete functional hermaphroditism in the human species could be established beyond question, it would indicate that the male secretory balance in man does not inhibit the female organs to the same extent that it apparently does in the Free-Martin cattle. If established, the idea of "male dominance" in the human species would be undermined in a new place. Such cases, if they occur at all, are exceedingly rare, but are of theoretical interest. We must not rush to conclusions, as the earlier sociologists used to do. Such a case would require careful analysis. Its very uniqueness would suggest that it may not be due to the ordinary causes of hermaphroditism, but might arise from some obscure and unusual cause such as the fusion of two embryos at a very early stage. The biochemistry involved is so intricate and so little understood that any deduction from the known facts would be purely speculative.] Like the Free-Martin cattle, some accident has resulted in a mixture of male and female characteristics. This accident occurs after a certain amount of embryonic development has taken place under the influence of the original predisposition of the fertilized egg. The delicate secretory balance, so complex in man, is upset. With partially developed organs of one type and with a blood-chemistry of the opposite one, some curious results follow, as the illustrative plates in Dr Bell's book show. It should be remembered that sex in higher mammals is of the whole body, and depends upon all the secretions. Hence an accident to one of the other glands may upset the balance as well as one to the sex glands themselves. For example, 15% of Neugebauer's[22] cases of female tubular partial hermaphroditism had abnormal growths in the suprarenals.