The time is ripe for better methods of handling this class of cases. The study of recidivism shows it as a blot upon our civilization, and demonstrates that many recidivists are mental defectives. The study, on the other hand, of the individual defective criminal demonstrates him to be a source of great financial loss and much moral contagion. Studies in heredity prove that he frequently begets his kind. Developments along medical and psychological lines have given us practical methods for diagnosis of mental defectives--even the border-line cases being easily determinable as such--and give us assurance of the social future of this class of cases. The work of our own institute proves not only the applicability of common-sense study of causative factors in general to court work in this country, but directly demonstrates the overwhelming value of early differentiation of a type of offender, who by the very nature of his mental make-up is bound under ordinary social conditions to become a recidivist. In order to get a more business-like administration of criminal affairs so that there may be practical application of at least some points which are scientifically demonstrable as imperative for the well-being of society, certain things are necessary. Concerning our immediate point, the needs are: first, better education of everybody implicated in the criminal situation as to the part that mental defect plays in delinquency. Then in connection with criminal courts, and especially in connection with juvenile courts, where the development of crime can be checked, there should be thoroughgoing study of the recidivist. The court should be acquainted with the practical value of such study and should act on it. No offender should be allowed on parole unless he is known to have the mental make-up which, on the whole, will in his environment tend to prevent his freedom from being inimical to society. Then, not a difficult matter to insure, there must be better classified institutional treatment. Finally, the court should have the power to adjudicate cases of mental defect in the best interests of society. TREATMENT OF THE MENTAL DEFECTIVE WHO IS ALSO DELINQUENT DR. HENRY H. GODDARD, VINELAND, NEW JERSEY Twenty-five per cent. of delinquents are mentally defective. While we have no absolute statistics, there are many indications that this is a safe estimate. All mental defectives would be delinquents in the very nature of the case, did not some one exercise some care over them. There is only one possible answer to the question, “What is to be done with the feebleminded person who is delinquent?” He must be cared for, but he must be cared for in a place where we care for irresponsibles. The jail or prison or reformatory, is not for him, neither must he be turned loose on the streets or sent back to the home and environment in which he has already become a delinquent.