V.--As repressive tribunals and the penitentiary administration have the same ends in view, and as the sentence only acquires value by its mode of execution, the separation, consecrated by our modern laws, between the court and the prison is irrational and harmful. VI.--Punishment by deprivation of liberty justly occupying the first place in our system of punishments, the association gives special attention to all that concerns the amelioration of prisons and allied institutions. VII.--So far as short imprisonments are concerned, the association considers that the substitution of measures of equivalent efficacity is possible and desirable. VIII.--So far as long imprisonments are concerned, the association holds that the length of the imprisonment must depend not only on the material and moral gravity of the offence, but on the results obtained by treatment in prison. IX.--So far as incorrigible habitual criminals are concerned, the association holds that, independently of the gravity of the offence, and even with regard to the repetition of minor offences, the penal system ought before all to aim at putting these criminals for as long a period as possible under conditions where they cannot do injury. “The association,” it is elsewhere stated, “starts from this point of view, that in order to combat criminality we must know criminality.” As Professor von Liszt said, “That which guides us and brings us together is the conviction that penal science must rest on the firm basis of facts, must attach itself to the realities of social and individual life, and not be content with the purely intellectual development of purely legal notions.” This is the only sound and rational foundation for criminal law, and it is because the association has adopted this foundation that I desire to call special attention to its valuable and fruitful work. The first session was held at Brussels, in August 1889. Berne was selected for the second, in 1890. The bulletins of the association (printed both in French and German) contain the reports presented at these meetings, as well as the subsequent discussions. They may be obtained, for a small sum, from the publisher, J. Guttentag, Berlin, or from C. Muquardt, Librairie Européenne, Brussels. The annual subscription is four shillings, and is payable to Professor G. A. Van Hamel, Amsterdam, Holland. APPENDIX D. _Some Cases of Criminality._ I have here brought together a few cases of fairly ordinary and representative criminality, chiefly in order to show how such cases are generally investigated. It has not seemed desirable to lay down any definite system of examination. Elaborate schemes have been prepared; it is more difficult to settle on a definite scheme on a small scale. At present it seems best to leave much to the judgment of the individual investigator. The six cases here given will serve to show how criminality is usually investigated, and may be useful as a guide.