Many of these boy-men make excellent farmers, dairymen, swineherds and poultry raisers under proper direction, and in the winter they can work in the tailor, paint, carpenter, mattress and mat shops. Nor need this be confined to the males alone. The girl-women raise poultry, small fruits and vegetables very successfully. They pickle and can the products of the land, and in winter do knitting, netting and sewing of all kinds. No manufacturer of to-day has let the product of his plant go to waste as society has wasted the energies of this by-product of humanity. And the feeble-minded are happy when they have occupation suited to their needs. If one will but see them when they are set at occupations within their comprehension and ability, he will quickly understand the joy they get out of congenial work. Colonies such as Mr. Johnstone describes will take care of the able-bodied feeble-minded; other institutions will provide for the very young and the aged; finally, there will always be many of these defectives who can best be "segregated" in their own homes; whose relatives have means and inclination to care for them, and sufficient feeling of responsibility to see that the interests of society are protected. If there is any doubt on this last point, the state should itself assume charge, or should sterilize the defective individuals; but it is not likely that sterilization will need to be used to any large extent in the solution of this problem. In general it may be said that feeble-mindedness is the greatest single dysgenic problem facing the country, that it can be effectively solved by segregation, and that it presents no great difficulty save the initial one of arousing the public to its importance. Similarly the hereditarily insane and epileptic can best be cared for through life-long segregation--a course which society is likely to adopt readily, because of a general dread of having insane and epileptic persons at liberty in the community. There are undoubtedly cases where the relatives of the affected individual can and should assume responsibility for his care. No insane or epileptic person whose condition is probably of a hereditary character should be allowed to leave an institution unless it is absolutely certain that he or she will not become a parent: if sterilization is the only means to assure this, then it should be used. In many cases it has been found that the individual and his relatives welcome such a step. The habitual criminals, the chronic alcoholics, and the other defectives whom we have mentioned as being undesirable parents, will in most cases need to be given institutional care throughout life, in their own interest as well as that of society. This is already being done with many of them, and the extension of the treatment involves no new principle nor special difficulty.