Gall (in his treatise on the functions of the brain, Vol. III., p. 314) has given us the history of a boy, three years old, who was strongly addicted to onanism, and in whom two thirds of the cerebellum was found to be suppurated. A young man, nineteen years old, was so much addicted from his infancy to masturbation, that all mechanical means were tried in vain to conquer this fatal habit. It was even proposed to scarify the penis, in order that his motions might be prevented by pain. All attempts were in vain; and this unfortunate young man, exhausted by continual losses of semen, died three months after entering Hotel Dieu, in the most complete state of marasmus. He had often experienced attacks of epilepsy. On opening the dead body, we found in his cerebellum an encephaloid tumor the size of a nut, which had began to soften. A girl ten years old, addicted to masturbation, and of a melancholy temperament, complained for four months of severe pains in the head. These pains increased to such a degree, that for the last three weeks of her life she was constantly crying. She was finally carried to the Hospital des Enfans. The only additional information obtained in regard to her was, that the patient was bedridden for twelve days--that she was affected with vomiting of bile, followed by somnolence--that for three days she had ceased to speak, or answered with difficulty--that she constantly kept her hand to her head, which was thrown back. During the last four days, she was comatose: there was a slight degree of strabismus, and dilatation of the pupil. A post-mortem examination showed inflammation, with purulent infiltration of the arachnoid membrane, at the upper part of the cerebellum. The substance of the brain presented tubercles and a softening.