“A highly intellectual lady was affected from infancy with very passionate desires; and her careful education alone saved her from those excesses to which she was exposed by her violent temperament. When arrived at a more advanced age, she was left to herself. She attempted every mode to satisfy her burning passions; but enjoyment seemed only to irritate her. She was frequently almost in a state of mania. In despair, she left her house, quitted the city, and took refuge with her mother, in a desolate country, where the want of exciting objects, and the utmost severity, and the cares of gardening, prevented the evil. After a time, she returned again to a large city, was again threatened with relapse, and took refuge a second time with her mother. On returning, she came to see me at Paris, and complained to me in great despair. ‘On every side, I see images of luxury--in every place--at table, and even in my sleep, the demon pursues me. I shall either be mad, or die.’ “I told her briefly the natural history of the instinct of propagation. I called her attention to the form of her neck. Although her head was very large, yet the diameter of the nucha exceeded the distance from ear to ear. She formed an idea of the cause of her state. I advised her to visit her mother again; to vary her occupations, so as to diminish the activity of her cerebellum; to apply leeches to the nucha, to diminish the irritation of this organ; to avoid all stimulating meats and drinks, &c. &c. “I have seen at Paris,” says the same author, “a boy, five years old, who seemed sixteen, in respect to his corporeal strength. His genital organs were perfectly developed; his beard was strong; his voice was rough and hoarse: in short, he presented all the signs of virility.” Dr. Gall was struck, also, with the development of the cerebellum in a boy ten years old, who had been detained in a house of correction at Leipzick, for having violated a young girl. He had also seen at Paris a young mulatto, less than three years old, who was remarkable in the same respect. He made advances, not only to young girls, but to women, and urged them to consent to his desires. His sexual organs, with the exception of long-continued erections, exhibited nothing remarkable. As he was surrounded by girls who indulged him, he died of consumption before he was five years old. His cerebellum was unusually developed; the rest of the head was of the common size. Gall has related other instances of the kind.