(3) The ends to be borne in mind in the treatment of the convicted Criminal are four:  First, reparation to the injured party must be demanded of him, so far as money will constitute reparation; if he has not the money, his future work must go for its accumulation, so far as that is compatible with the support of his infant children.  Secondly, he must be punished severely enough to serve as a warning to other potential offenders and, so far as they are amenable to such fears, deter them from similar crimes.  Capital punishment for the worst crimes is shown deterrent than confinement; whether the danger of executing an innocent man is grave enough to offset this public gain is an open question.[Footnote:  See A. J. Palm, The Death Penalty.] Thirdly, he must be prevented from doing any more harm; this means confinement just so long as expert criminologists deem him dangerous, whether not at all (unless to deter others) or for life.  The old system of giving a fixed sentence is wholly unjustifiable; some are thereby kept imprisoned when there is every reason to believe them capable of living honorably and serving the community as free men, others are let loose, after a term, more dangerous to the community than ever.  The habitual criminal, who alternates between periods of crime and periods of imprisonment, should be an unknown phenomenon.  The judge should be obliged to pronounce an indeterminate sentence, and leave it to the expert prison officials to decide if, or when, it is safe to release the prisoner on parole.  Experience has already shown that few mistakes are made (where prison management is kept out of machine politics); and as the released prisoner is under surveillance, and may be returned to the prison without trial for disorderliness, drunkenness, or other anti-social conduct, he is not likely to do much damage.  A second offense would be likely to bring upon him imprisonment for life, which would be within the discretion of the prison officials.  This method provides a spur to good behavior, and, when used in conjunction with the reforming influences we are about to consider, works admirably in abolishing the criminal class; whatever criminal class persists-those who cannot or will not reform are kept under restraint for life, where they can do no harm.  Fourthly, and most important of all, a painstaking attempt must be made to reform the criminal, to make him a normal, socially useful man.  At present our prisons are rather schools of corruption than of uplift; too often first offenders are thrown into association with hardened criminals, and come out after their term of years with their minds full of criminal suggestions, and less able than before to live a normal life.  The prison should be a training school for the morally perverted.  First of all, the prisoner should be taught a trade, if he knows none, and made competent to earn an honest living.  He should be kept at regular work, and his wages used partly to reimburse society for his keep, and partly to support his family,