In more serious cases the offender is tried by a member of the Visiting Committee of the prison or by a Prison Commissioner. In some cases the conclusion cannot be escaped that offences are due more to an incompatibility of temperament between the prisoner and those over him than to anything else. A prisoner may behave and work well when under the supervision of one officer, and may do badly when under the care of another. Some people can manage those under them better than others; but not infrequently the prisoner is neither a malicious person nor the warder a stupid person, and yet they cannot get on together. The obvious thing to do is to separate them; the easy thing to do is to punish the prisoner. Sometimes assaults are made on warders by prisoners. In sixteen years' experience I have seen very few, and the assailants were usually half-witted creatures who had conceived a dislike, which did not seem to be founded on any tangible reason, against the person assailed. In my opinion these cases should never be tried in prison. Offences committed in prison which would be cognisable by the criminal authorities if committed outside should be tried in an open Court. I do not suggest that the prisoner would be treated unjustly if tried in prison, but it cannot be denied that the atmosphere is not favourable to his receiving the impression that he is getting what he would call "a fair show"; and the trial of a man before a Court consisting of those interested in the management of prisons, on the complaint of a prison official, and without the presence of any members of the general public, is not calculated to inspire confidence. Prisoners are at liberty to make any complaint to the Prison Commissioners in writing, and the governor is obliged to forward it; or they may communicate direct with the Secretary for Scotland without the writing being seen by the prison officials. Such complaints may be referred to those complained against for answer, and if the result is not satisfactory a special enquiry may take place. Each prison has its punishment cells--places for the incarceration of unruly prisoners. Under rational management there is no use for them except temporarily, and then only to prevent the prisoner from injuring himself or others, or from annoying other prisoners by noise, in a fit of temper suggestive of insanity.