Prisoners differ as much from one another as people who are law-abiding. No two are alike even among those who have committed similar offences; and those who enter prison for the first time are not distinguishable in appearance from members of the same social class who have not transgressed the law. That they may develop certain common characteristics as a result of their way of living is true; and there is a criminal class in the same sense as there is a professional class or an artisan class. The criminal is born and made just as the policeman is born and made. See him early in his career and it is impossible to tell what he is, but when he has undergone his training it may be expected to leave its mark on him which those who know may read with more or less success. These common characters in the criminal have been laboriously sought for and recorded; measurements have been made and tables compiled; ratios have been calculated to decimals, and an appearance of scientific precision has been given to the study of the criminal which has led many to the assumption that the writers must know more about the offender than they themselves do. Yet there are few men or women of mature years who have not known with some degree of intimacy at least one person who has sunk into the mire of vice and it may be of crime; and one such case thoroughly known is a better basis for study of the subject than any amount of tables. It may be of importance to compare the peculiarities of habitual offenders, but it is of greater use to learn how they acquired them. As for the habitual himself, he is not really the problem. His life is seldom a long one, and even if nothing other than is at present were done to, or for, him, he would die out in a generation. I do not say that the question of what we should do with our habituals is not important, but of much more importance is the devising of means for preventing the wrongdoer from acquiring the habit and joining their ranks. A study of confirmed criminals may be interesting pathology, but it is the study of the beginner in crime that will prevent the formation of the criminal class, in so far as it affords means for enabling us to deal sanely with them. When an atrocious crime is perpetrated there is intense public interest shown in the criminal. He is examined in a distorted mirror and his parts are magnified. The more extraordinary he is, the more monstrous he appears, the greater the sensation. Yet the ordinary men and the ordinary offences are at once the more common and the more important. Here and there a person may be born with such a crooked disposition that it is difficult to see how he could go straight; just as occasionally one of great wisdom enters the world, or a child with more than the usual number of heads or limbs; but the occurrence is quite exceptional, and it is never profitable to generalise from it.