Up to within recent times juvenile offenders have been subjected to the same laws and the same penalties as hardened criminals, and there is no doubt but that a great many boys and girls who had broken some law or local ordinance, often through carelessness or ignorance, were placed in detention houses with older criminals and in this way became accustomed to the criminal classes and frequently were induced to enter upon a life of crime. The prevailing idea of criminal law is to punish the offender for the offense committed against the laws of the state. Modern social science teaches that it is unfair to boys or girls of tender age to visit a punishment of this sort upon them, especially when it may lead to a continuance of crime, rather than to an avoidance of it in the future. Consequently, with the introduction of the Juvenile Court system the cases are taken out of criminal procedure and placed under the jurisdiction of courts of equity. The trials are usually informal, although the child has a right to a trial by jury in case he is accused of a serious offense, and he has the right to legal counsel, if he so desires. These rights, however, are very seldom exercised, inasmuch as it is coming to be recognized that the judges represent an actual attempt to do what is best for the child and do not represent in any way the prosecuting power of the state. The principal figure in a Juvenile Court is the judge of the court, and wherever it is possible to do so, men especially trained in juvenile psychology should be appointed to this office. A knowledge of children and an understanding and appreciation of their feelings is necessary on the part of the judge, and he should be a person of sufficiently magnetic personality to win the sympathies of the children and to enable him to gain their confidence. To what an extent the influence of a single man may reach in the case of juvenile offenders and how far his influence may prevent crime among children, is well seen in the case of Judge Lindsey, of Denver, Colorado. The second official in the court is the probation officer, who is under the authority of the judge, makes the necessary investigations when cases are reported to him, and presents the facts in the case to the judge of the court. He also must look after the children who have passed through the court to see that the sentences of the court are carried out; and if the children are placed on probation under the guardianship of relatives or friends, he must make visits sufficient in number and often enough so that he can be sure that the best interests of the child are being safeguarded, and if he finds the case to be otherwise, to report the facts to the judge of the court.