At the consultation the patient gave the impression of a very neuropathic, tainted person. The neuropathic expression of the eyes cannot be described. Appearance entirely feminine. With the exception of a very narrow, arched palate, there was no skeletal abnormality. With difficulty the patient could be brought to give the details of her sexual abnormality. She complained that she had married without knowing what marriage between men and women was. She loved her husband dearly for his mental qualities, but marital intercourse was a pain to her; she did it unwillingly, without ever finding any satisfaction in it. Post actum, all day long she was weary and exhausted. Since the abortion and the interdiction of sexual intercourse by the physicians, she had been better; but she thought of the future with horror. She esteemed her husband, and loved him mentally; but she would do anything for him, if he would but avoid her sexually in the future. She hoped to have sensual feeling for him in time. When he played the violin, she seemed to feel the beginning of an inclination for him that was something more than friendship; but it was only transitory, and she could get no assurance for the future in it. Her greatest happiness was in correspondence with her former lover. She felt that this was wrong, but she could not give it up; for to do so made her miserable. It is remarkable that the anomaly may be long limited to mere perversion of the sexual instinct, and that the impulse to perverse indulgence may make its appearance after some accidental cause,—_e.g._, seduction, or some neurosis. Such cases might easily be mistaken for acquired contrary sexual instinct (_v. supra_), if, with reference to the sexual feeling, they should not be demonstrated by the history to be original and congenital. Case 118. Mrs. C., aged 32, wife of an official, a large, not uncomely woman, feminine in appearance, comes of a neuropathic and emotional mother. A brother was psychopathic, and died of drink. Patient was always peculiar, obstinate, silent, quick-tempered, and eccentric. The brothers and sisters are excitable people. Pulmonary phthisis has been frequent in her family. When only a girl of thirteen, with signs of great sexual excitement, she attracted attention by enthusiastic love for a female friend of her own age. Her education was strict, though the patient secretly read many novels, and wrote innumerable poems. She married at eighteen to free herself from unpleasant circumstances at home.