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Updated: June 20, 2025
Environment, habit-formation, training, education serve only to bring out the internal secretion make-up of the girl, or to suppress and distort and so spoil her. Adolescence will be peaceful, calm, semi-conscious, or disturbing, revolutionary and obsessive according to the reaction of the other endocrines to the rise of the ovaries.
A cry has been raised for the superman, and a cry has been raised for a method of anthropometry. For the lack of these two, it has been said, all governments have been doomed to defeat. The study of the endocrines will by no means supply a panacea.
There should be a stable balance between the various endocrines, the stability expressing itself in what we are pleased to call the normal. There should also be a balance between the antagonistic elements in the same gland; for instance, the pituitary. The pituitary, built of two distinct portions, the anterior and the posterior, is in equilibrium when the two are nicely adjusted.
The four phases of a woman's twenty-eight day cycle succeed each other as the premenstrual, the menstrual, the postmenstrual and the intermenstrual, with the precision of pistons moving in a motor, when no interfering factor as disease, profound emotion or climate disturbances are present, affecting the endocrines.
Nor need anyone fear that the science of the internal secretions in its maturity will signify the abolition of the marvelous differences between human beings that create the unique personalities of history. A derangement of the endocrines has been responsible for masterpieces of the human species in the past and will be responsible for them in the future.
Brown-Séquard was the first to show that extracts of sex glands could increase the capacity for muscular work. Whether this was a direct effect upon the muscles, or indirect through the nerves or other endocrines, no one can say.
And since these endocrines control not only physique and physiognomy, anatomic and functional minutiae, but also mind and behaviour, we are justified in putting down the white man's predominance on the planet to a greater all-around concentration in his blood of the omnipotent hormones. While the Negro is relatively subadrenal, the Mongol is relatively subthyroid.
Which will win appears to depend primarily upon the kind of endocrines that predominate in the make-up of the individual, secondarily with his education. For it is the endocrines that are really in conflict when there is a struggle between two instincts.
Sex exhibition differs in man and woman because of the differently combined internal secretions that are their substrates. The male's attitude, aggressive pursuit, is instigated by the compound adrenal and gonad endocrines. The female's various emulsions of coyness and display are motivated by posterior pituitary and gonad hormones in alliance.
The science of education has yet to begin, as the offspring of that science of the future, to which knowledge of the internal secretions will contribute no little, the science of puericulture. It is difficult, indeed, to avoid becoming merely enthusiastic upon the possibilities of the applications of the endocrines to the educational domain.
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