In Glasgow special care is taken in all cases of murder to enquire into the mental condition of the accused. From the time he is admitted to prison he is placed under observation with this purpose in view, and any evidence bearing on the subject is carefully examined. His conduct in prison may be perfectly sane, but if there is any reason to believe that, when at liberty, he showed signs of insanity, the medical officer personally makes an investigation and reports. The prisoner may be penniless, but he suffers no prejudice thereby, as the work is undertaken at the expense of the Crown; and at the trial the necessary witnesses are usually produced on his behalf if the reports show that he is insane. This is true in other than murder cases to this extent, that the procurator fiscal informs the prison authorities of any allegation as to the prisoner's mental condition and asks for a report. He also puts before the judge any statement by the prison doctor as to the health of a prisoner mental or physical, even although the report may not have been asked for. Insanity may be a result as well as a cause of misconduct. A life of alternate indulgence and repression tends to unsoundness of mind; and I have seen men and women, who when first they fell into criminal courses were free from any suspicion of insanity, gradually degenerate and become insane. When the kind of life they lead is considered the wonder is that so many of them do not become mad. X 4 was a girl of the labouring class. She was handsome and of a fine figure. Good-tempered and of an easy disposition, she was rather indolent; and as she was not trained in any very strong regard for morality and had plenty of admirers, she soon gave up working and took to the less restricted life of the town. She got into the hands of the police and was sent to prison, where her behaviour was beyond reproach. She did the work required of her and was always even-tempered and orderly. She took to drinking rather heavily, and during one imprisonment had a bad attack of delirium tremens, from which she recovered only to fall into a condition of dementia which remains and, though it has become less marked, leaves her unfit to take care of herself. Her insanity is the direct result of her excesses. X 5 got into bad company and was encouraged rather than corrected by her mother, who found her profit in her daughter's misdeeds. She left her work but did not take heavily to drink, and by and by came to prison charged with theft. She contracted disease in the course of her misconduct and began to take fits. She gradually became worse, as she gave herself no chance of recovery and neglected treatment when at liberty. She was in prison for short periods during two years and finally became insane and died. When first I saw her she was free from any mental or physical infirmity. Her disease and death were the direct result of her way of living.