The hair of the adrenal type is characteristic:  ubiquitous, thick, coarse and dry.  It is prominent over the chest, abdomen and back, and has a tendency to kink.  Often its color is not the expected:  an Italian’s will be yellow, a Norwegian’s jet black.  It has been stated that most red-haired persons are adrenal types.  Such persons also have well-marked canine teeth which is another adrenal trait.  They also have a low hair line.

When the adrenal type has a properly co-operating pituitary and thyroid, he possesses a striking vigor, energy and persistence.  With a fortunate combination, he develops into a progressive winning fighter, arriving at the top in the long run every time.

Brain work is pretty well lubricated in the well-compensated adrenal type.  Brain fag is closely associated with, if not dependent upon, adrenal fag, particularly of the cortex.  Brain tissue and adrenal cortex tissue are near relatives, and a normal human brain never develops without a normal adrenal cortex.  The adrenal type with an hypertrophied adrenal cortex is always efficient.

Among women, the adrenal type is always masculinoid.  If physically feminine—­due to adequate feminine reactions on the part of the other endocrines—­she will at least show the qualities of a psychic virilism.  A generation ago, such a woman had to repress her inherent trends and instincts in the face of public opinion and law, and so suffered from a feeling of inferiority.  Nowadays, these women are striding forward and will attain a good many of the masculine heights, commanding responsible executive positions and high salaries.  An adrenal type will probably be the first woman president of the United States.

However, that presupposes a normal range of action of the other endocrines.  Let there be some quirk or weakness elsewhere in the chain of hormones, and instead of the successful woman, behold the spinsters, the maiden aunts, the prudes and cranks who never satisfactorily adapt themselves in society.  To them must be given a good deal of credit for the suffrage revolution.  These unadapted adrenals, as we may call them, once sowed the seeds, expending their masculinism in the struggles of the pioneers’ martyrdoms, preparing the harvest their sisters, the more adequate adrenal types, will now reap.  The unadapted adrenals of today will have to look for new worlds to conquer.

So much for the compensated adrenal types.  They are the good workers, the efficients, the kinetic successes of the driven world.  They make, at a certain level, good slave drivers because they feel within themselves a driving force.  But suppose the adrenal type becomes uncompensated, or perhaps is inadequate to the demands of life to start with.  Then the story becomes different.  The perfect efficient superman of business or profession begins to lag.  Though he is himself in the morning, he begins to lag in the afternoon.  That is when he tires.  In the evening he is all in.  More