Our last census reports, although necessarily uncertain and unreliable, yet show ninety thousand mental defectives, not including the insane. Unrecognized and unacknowledged cases swell the number easily to one hundred thousand within our present borders--how many we are going to annex remains to be seen; but this is an enemy that attacks not our frontiers but our hearthstones. We have reached that point when we must conquer it, lest it should conquer us, and the means to this end may be summed up in three words--separation, asexualization, and permanent sequestration. "Diseases desperate grown by desperate appliances are relieved, or not at all," and we must recognize that heroic measures now are as essential to the welfare of the unfortunate as to society, which will then naturally adjust itself to new conditions. Viewing the separation and massing of these irresponsibles--innocent victims of ignorance, debauchery, or selfish lust--men will come to realize that a greater crime than taking is the giving of such life; and so a greater reverence for the sacredness of marriage, a deeper sense of the great responsibilities of parenthood, will do more to avert this evil than the most stringent marriage laws. That the present demands some restraint upon the ignorant and the indifferent there can be no doubt, and laws preventing the marriage of defectives and of their immediate descendants would go far to stem the tide of harmful heredity. But what to do with those now in our midst is the vital question! They must be provided for in a way that shall insure safety to society, economy to the State, and protection and happiness to the individual. The answer found in the experience of half a century is, briefly, asylums for the helpless--training schools and colonies for those capable of becoming helpful. These in very name and nature being widely separate, just as separate as titles and names indicate, should be their working systems. Work among the feeble-minded, a philanthropic movement directed first toward the idiot, soon found a limit in dealing with a subject not trainable and but slightly if at all improvable. Thence, diverging and broadening as idiocy became better understood and imbecility in various phases became recognized, it found its true province in strengthening and encouraging feeble intellects, arousing and stimulating indolent and weak wills, and in training and directing into healthful channels the abnormal energy of those destitute of the moral sense. How wide the divergence can readily be seen, as also how entirely incompatible with union must be work further apart in reality than is the training of an imbecile and a normal child. [Illustration: EXCITABLE IDIOT. Practically unimprovable. APATHETIC IDIOT. Practically unimprovable. IDIO-IMBECILE. But slight hope of improvement.]