The cases in which the perpetrator injures and cuts up the corpse are clearer. Such cases come next to those of lust-murder, in that, in these individuals, cruelty, or at least an impulse to attack the female body, is connected with lust. It is possible that a remnant of moral sense deters from the cruel act on a living woman, and possibly the fancy passes beyond lust-murder and rests on its result, the corpse. Here, also, it is possible that the idea of defenselessness of the body plays a _rôle_. Case 23. Sergeant Bertrand, a man of delicate physical constitution and of peculiar character; from childhood silent and inclined to solitude. The details of the health of his family are not satisfactorily known; but the occurrence of mental diseases in his ancestry is ascertained. It is said that while he was a child he was affected with destructive impulses, which he himself could not explain. He would break whatever was at hand. In early childhood, without teaching, he learned to masturbate. At nine he began to feel inclinations toward persons of the opposite sex. At thirteen the impulse to sexual intercourse became powerfully awakened in him. He now masturbated excessively. When he did this his fancy always created a room filled with women. He would imagine that he carried out the sexual act with them, and then killed them. Immediately thereafter he would think of them as corpses, and of how he defiled them. Occasionally, in such situations, the thought of carrying out a similar act with male corpses would come up, but it was always attended with a feeling of disgust. In time he felt the impulse to carry out such acts with actual corpses. For want of human bodies, he obtained those of animals. He would cut open the abdomen, tear out the entrails, and masturbate during the act. He declares that in this way he experienced inexpressible pleasure. In 1846 these bodies no longer satisfied him. He now killed dogs, and proceeded with them as before. Toward the end of 1846 he first felt the desire to make use of human bodies. At first he had a horror of it. In 1847, being by accident in a grave-yard, he ran across the grave of a newly-buried corpse. Then this impulse, with headache and palpitation of the heart, became so powerful that, although there were people near by, and he was in danger of detection, he dug up the body. In the absence of a convenient instrument for cutting it up, he satisfied himself by hacking it with a shovel.