X 6 had always been a wild and uncontrollable lad. He entered the army and was soon found to be one of the bad bargains. He was ultimately discharged. He got into a lawless set in Glasgow and picked up a living, sometimes honestly, sometimes otherwise. He suffered imprisonment on several occasions and was always a troublesome man to deal with. Gradually he showed delusions of suspicion and had attacks of violence; and finally he had to be dealt with as a criminal lunatic. In his case there was from the beginning a condition of mental instability, which showed itself in his restlessness and impatience of restraint. It unfitted him for a soldier's life, and the discipline incident thereto was much more likely to aggravate than to remedy his condition. Having no friends capable of directing him, he flew to excesses and was punished for the crimes in which he took part. Than life in prison there could be nothing imagined that would be worse for him; and the monotony of it and the quiet would tend to develop the delusions which afterwards dominated his mind, and influenced his conduct to such an extent that under their influence he committed assaults and proved himself to be a dangerous lunatic. His case is different from the last two in respect that the very means adopted to deal with his excesses were largely the cause of his final insanity. Short of cases of certifiable insanity there are a number of prisoners who are mentally defective. The total is small, but the individuals command an amount of attention, and cause an amount of trouble to the public, out of all proportion to their numbers. In some cases the defect consists of delayed development; the body and the passions have grown at a greater rate than the mental powers, but time and training would be likely to establish an equilibrium. In other cases there seems to be something wanting in their mental outfit--they "have a want," as it is put colloquially and expressively. Many of them are capable of behaving themselves when under the guidance of well-disposed persons; and more may be found about religious meetings than in prison. They have come under the influence of the Churches and have benefited thereby, and it is largely because no such healthy influence has been obtained over those others that they are in prison. They are usually quite tractable and pay obedience to stronger-minded persons. When these are law-abiding they cause no trouble, but when the influence is evil it is otherwise.