irrational methods now employed for the suppression of crime tend directly to increase it. It is the aim of the positive, in distinction from the classical school of criminalists to discover the real causes of criminal actions, and thus to endeavour to eradicate or neutralize them. A casual criminal, for example, whom external conditions, accidental circumstances, sudden temptations or bad influences have led astray, should not be treated in the same manner, although guilty of the same overt act, as the habitual or constitutional criminal, whose wrong-doing arises from a diseased, ill-balanced or undeveloped mental or physical organization, and is therefore an inborn and perhaps irresistible proclivity. The latter is hardly responsible for his conduct, and the possibility of reforming him is slight. The only proper thing to do with such a culprit is to render him personally harmless to society either by death or perpetual incarceration, and to prevent him from propagating his kind. The law of the survival of the fittest through selection suggests as its necessary sequence the suppression of the unfittest through sterilization. Nature has her own effective and relentless method of attaining this desirable result; but man is constantly thwarting her beneficent purposes by all sorts of pernicious schemes originating in factitious sentimentalism and maudlin sympathy, which under the plea of philanthropy tend to foster and perpetuate moral monstrosities to the discomfort and detriment of civilized society and the permanent deterioration of the race. To sentence persons of this class to eight or ten years’ imprisonment and then to turn them loose again as a constant source of peril to mankind, is the greatest folly that any tribunal can possibly commit. It is a wrong done both to the criminal and to the community of which he is a member. The penalties imposed by the law should be determined not solely by the enormity of the crime, but chiefly by the character of the criminal. Paradoxical as such a conclusion may be, it is nevertheless a strictly logical deduction from the premises, that the more corrupt he is by his physical constitution and therefore the less culpable he is from a moral point of view, the more severe should be the sentence pronounced upon him. Where the vicious propensity is in the blood and beyond the reach of moral or penal purgations, the only safety is in the elimination of the individual, just as the only remedy for a gangrened limb is amputation. We ridicule ancient and mediæval courts of justice for prosecuting bugs and beasts, but future generations will condemn as equally absurd and outrageous our judicial treatment of human beings, who can no more help perpetrating deeds of violence, under given conditions, than locusts and caterpillars can help consuming crops to the injury of the husbandman, or wild beasts can help rending and devouring their prey. It is also interesting to know that in