Allied to the principle of indeterminate segregation is that of conditional release, which with the progressive prison system, known as the Irish, is now accepted in nearly all European countries. But conditional liberation in the system of definite punishments, without distinction amongst the types of criminals, is both contradictory in theory and ineffectual in practice. At present, indeed, it has only a mechanical and almost impersonal applica<p 216>tion, with one fallacious test, that of the alleged ``good conduct'' of the prisoner, which, according to the English Inquiry Commission in 1863, ``can only have the negative value of the absence of grave breaches of discipline.'' It will be understood that conditional release, as it would be organised in the positive system of indeterminate segregation, ought only to be granted after a physio-psychological examination of the prisoner, and not after an official inspection of documents, as at present. So that it will be refused, no longer, as now, almost exclusively in regard to the gravity of the crime, but in regard to the greater or less re-adaptability of the criminal to social conditions. It will therefore be necessary to deny it to mad and born criminals who are guilty of great crimes. Conditional liberation is now carried out under the special supervision of the police; but this is an ineffectual measure for crafty criminals, and disastrous for occasional criminals, who are shut out by the supervision from re-adaptation to normal existence. The system of indeterminate segregation renders all special supervision useless. Moreover, this duty only distracts policemen by compelling them to keep an eye on a few hundred liberated convicts, and to neglect thousands of other criminals, who increase the number of unknown perpetrators of crime. Similarly as to the discharged prisoners' aid societies, which, notwithstanding their many sentimental declamations, and the excellence of their intentions, continue to be as sterile as they are benevolent. The reason here also is that they <p 217>forget to take into account the different types of criminals, and that they are accustomed to give their patronage impartially to all discharged prisoners, whether they are reclaimable or not. It must not be forgotten, moreover, that this aiding of malefactors ought not to be exaggerated when there are millions of honest workmen more unfortunate than these liberated prisoners. In spite of all the sentimentalism of the prisoners' aid societies, I believe that a foreman will always be in the right if he chooses an honest workman for a vacancy in his workshops in preference to a discharged prisoner. At the same time these societies may produce good results if they concern themselves solely with occasional criminals, and especially with the young, and make their study of crime contribute to the training of future magistrates and pleaders.