Invulnerability, another characteristic common to criminals, has been observed by Tonnini in epileptics, whose wounds and injuries heal with astonishing rapidity, and he is inclined to regard this peculiarity in the light of a reversion to a stage of evolution, at which animals like lizards and salamanders were able to replace severed joints by new growths. This invulnerability is shared by all degenerates: epileptics, imbeciles, and the morally insane. "One of these latter," says Tonnini, "tore out his moustache bodily and with it a large piece of skin. In a few days the wound was nearly healed." Very characteristic is the almost automatic tendency to destroy animate and inanimate objects, which results in frequent wounding, suicides, and homicides. This desire to destroy is also common to children. Fernando P. (Fig. 15), an epileptic treated by my father, when enraged was in the habit of smashing all the furniture within his reach and throwing the pieces over a wall some twenty-five feet high. Misdea, a regimental barber, to whom we shall refer later, roused to fury by dismissal from his post, broke four razors into small pieces with his teeth. Another epileptic, Piz... used to break all the crockery in his cell regularly every other day, "just to give vent to his feelings." This tendency to destroy everything in the cell is common also to ordinary criminals. _Cases of Moral Insanity with Latent Epileptic Phenomena._ The following cases, which were treated by my father and which were subject to careful observation and study, will serve to give a clear idea of the criminal form of epilepsy.