The studies of Drs Crile and Cannon show that the effects of fear on the ganglionic cells are tremendous. Some of the cells are exhausted and completely destroyed by intensity and duration of emotion. Cannon's experiments on animals during fear, rage, anger, and hunger, show that the entire nervous system is involved and that internal and external functions change their normal nature and activity. The thyroid and adrenal glands are deeply affected. In times of intense emotion, the thyroid gland throws into the system products which cause a quickened pulse, rapid respiration, trembling, arrest of digestion, etc. When the subjects of experiments in the effect of the emotions of fear, rage, etc., are examined, it is found that the physical development, especially the sexual development, is retarded. Heredity, age, sex, the nervous system of the subject, and the intensity and duration of the shock must all have consideration. Griesinger, Amard and Daguin emphasize especially the results of pain, anxiety and shock, claiming that they are difficult or impossible to treat. To the bride brought up under the old taboos, the sex experiences of early married life are apt to come as a shock, particularly when the previous sex experiences of her mate have been gained with women of another class. Indeed, so deeply has the sense of shame concerning the sexual functions been impressed upon the feminine mind that many wives never cease to feel a recurrent emotion of repugnance throughout the marital relationship. Especially would this be intensified in the case of sexual intercourse during the periods of gestation and lactation, when the girl who had been taught that the sexual functions existed only in the service of reproduction would see her most cherished illusions rudely dispelled. The effect of this long continued emotional state with its feeling of injury upon the metabolism of the female organism would be apt to have a detrimental effect upon the embryo through the blood supply, or upon the nursing infant through the mother's milk. There can be no doubt that anxiety, terror, etc., affect the milk supply, and therefore the life of the child.