With segregated criminals supporting themselves, as they might be made to do under our plan, the enormous cost of penitentiaries would at one step be done away with. A penal colony such as Mr. Wooldridge proposed would be placed in such a situation that the convicts could be compelled to raise every bit of food they put into their mouths and every bit of clothing they put upon their backs. Out in one of the western states or territories a reservation might be made of several thousand acres of land, around the rim of which the convicts could be made to build a great wall shutting themselves away from the rest of the world. On its surface would be built in the same way habitations for them, and they would live there, tilling the soil and manufacturing their necessities, until death. The time will come when this plan will be carried out. The law-abiding citizens of the United States will not continue forever to be taxed enormously for the support of a class of persons who are enemies of public order and decency. IMPROVING THE PUBLIC HEALTH. Can a nation be said to be civilized that spends billions of dollars every year in the detection and punishment of crime, and not one cent for the prevention and cure of disease, which kills thousands of persons who might otherwise have retained their health and strength? Suppose only a billion dollars a year, that now goes to the support of criminals in jails and penitentiaries, were to be saved by the establishment of a national penal colony where criminals would be made to support themselves; and suppose the billion dollars thus saved were to be spent on free hospitals and medical treatment, would the country not be much better off? Such a use of the money would result in cutting down the death rate in the United States at least one-half. The death rate in England, through the exercise of care and the assistance of the government, has been reduced from one-half to two-thirds in many diseases, and ten to twelve years have been added to the expectation of life between the ages of one year and forty-five years. A similar state of affairs should exist in this country, where the waste of life and health through preventable diseases is incalculable. Our enormous expense on account of criminals, most of which might be avoided if brains were really brought to bear upon the problem, will not always be endured. The future will force the criminal to support himself, and the money now expended on him will be devoted to the preservation of health and life among honest men, for the time will certainly come when free hospitals and medical service will be provided by the government for every citizen who needs them. ROAD WORK FOR CONVICTS. Criminology, on its humanitarian side, seeks new methods of employment for criminals. It seeks to regenerate convicted criminals morally, as well as care for their physical well-being.