With an overactive thyroid we observe a high color, sleeplessness, restlessness, a tendency to lose weight, emotionalism, profuse perspiration, bright, large eyes, good white teeth. =The Adrenal Glands= are about the size of a bean and located on top of the kidneys. They secrete adrenin which, when poured into the blood, causes muscular tension, accelerates the heart beats and the breathing rate, dilates the pupil and produces fear or anger according to the relative size of the core (medulla) or envelop (cortex) of the adrenals. In timid animals (and women) the cortex is thin, in courageous animals (and men) the cortex is rather thick. According to the thickness of your cortex you shall, in an emergency, resort to either fight or flight. A man with a thin cortex looks feminine, a woman with a thick cortex looks mannish. The adrenals control the color of the skin, the growth of hair, the size of the canine teeth and the color of the teeth. To good adrenals correspond an olive complexion, much hair on the body, rather yellowish teeth and strong canines. The bearded lady of the circus is a woman with overdeveloped adrenals and a thick cortex. Weak adrenals go with cold extremities, a hairless body, poor canines, lack of ambition, discouragement, fatigability, etc. =The Gonads or Sex Glands=, testes in man, ovaries in woman, affect thru the secretions of their interstitial cells, the pitch of the voice, the growth of pubic hair, the size of the breasts, the distribution of fat. Good gonads mean masculine looking men and feminine looking women. Poor gonads mean feminine looking men, hairless and with overdeveloped breasts, talking in a high-pitched voice, with a tendency to obesity and laziness (eunuchs); scrawny looking women who may later in life grow abnormally fat, with, in their youth, flat chests, scanty menstruation, etc. Healthy gonads also retard senility. Gonads whose interstitial cells have been rehabilitated by the Steinach operation bring a new youth to the organism, mentally and physically. Other glands, the thymus, pancreas, parathyroid, pineal body also play an important part in shaping the human body and with it the personality. The limits of this book do not allow me, however, to discuss them even superficially. CHAPTER XXIV GLANDULAR PERSONALITIES I stated in the preceding chapter that to every degree of glandular development there corresponds a certain set of physical characteristics which, in the love life, may be transformed into fetishes, (beautiful features, laymen call them), which are necessary to arouse sexual desire in one's mate, but which are not necessarily attractive to any one else. Those physical characteristics are, in turn, the tangible evidence of the presence of certain mental attitudes and predispositions.