These unfortunate beings frequently show perfect mental clearness before the crime and even in the act of striking the fatal blow; yet their action is purely instinctive and not prompted by passion or any other cause. Although such individuals appear to reason, can it be said that they are in full possession of their mental faculties? If they are, how shall we explain the wholesale destruction of those they hold most dear? A husband kills the wife to whom he is sincerely attached; a father, the son he loves most; or a mother, the infant at her breast.
Such an extraordinary phenomenon can only be explained by a sudden suspension of the intellectual and moral faculties and of the powers of the will.
Special Forms of Criminal Insanity
ALCOHOLISM
In addition to these casual forms of lunacy, in which the individual is led to commit crime by a momentary alteration of his moral nature, we find other forms which might be called specific, because the criminal act forms the culminating point of the malady. The sufferers from these forms are less easily distinguished from ordinary criminals and normal persons than are the lunatics of whom we have just spoken. These mental diseases, which should be studied separately, are alcoholism, hysteria, and epilepsy.
It is well known that temporary drunkenness may transform an honest, peacable individual into a rowdy, a murderer, or a thief.
Gall narrates the case of a certain Petri, who manifested homicidal tendencies when excited by alcohol. Locatelli mentions a workman of thirty, who, when under the influence of drink, would smash everything around him and stab the companions who sought to restrain his drunken fury. Ladelci and Carmignani cite the case of a miner, who was repeatedly arrested for drunken brawls, and when reproved replied: "I cannot help it. As soon as I drink, I must start fighting."
Very characteristic is the case of a certain Papor... who was imprisoned for some time at Turin. His father was a drunkard and ill treated his wife. The son became a soldier, then an excise officer, fireman, and finally nurse in an infirmary, and was known as a respectable, temperate man. In 1876, he was transferred to the Island of Lipari, where malvoisie only costs 25 centimes a litre, and there he acquired a taste for wine, without, however, drinking to excess. But a year later, a change in the hospital regulations gave him longer hours of leisure, and he began to drink deeply. In 1881, while intoxicated, he accosted a sportsman and pretending to be a police officer, ordered him to give up his gun. At that moment he was arrested by a genuine constable and taken to the barracks, where he was sentenced, without any one's observing his drunken condition. After his release, he committed other offences of the same type, which were followed by confession and repentance.
Chronic Alcoholism. The phenomena developed by chronic inebriety are, however, still more important from the point of view of the criminologist than the immediate effects of alcohol on certain constitutions.