The rising tide of firm conviction in the minds of present day sociologists, that the fertility of the unfit is menacing the stability of the whole social superstructure, is forcing many to advocate more drastic measures for the salvation of the race. Weinhold seriously proposed the annual mutilation of a certain portion of the children of the popular classes. Mr. Henry M. Boies, the most enlightened analyst of the problem of the unfit, in his exhaustive work "Prisoners and Paupers," urges the necessity of effectively controlling the fecundity of the degenerate classes, and he points to surgery, and life-long incarceration as the solution of the problem. Dr. McKim, in an exhaustive work on "Heredity and Human Progress," after declaring that he is profoundly convinced of the inefficiency of the measures which we bring to bear against the weakness and depravity of our race, ventures to plead for the remedy which alone, as he believes, can hold back the advancing tide of disintegration. He states his remedy thus:--"The roll then, of those whom our plan would eliminate, consists of the following classes of individuals coming under the absolute control of the State:--idiots, imbeciles, epileptics, habitual drunkards and insane criminals, the larger number of murderers, nocturnal house-breakers, such criminals whatever their offence as might through their constitutional organization appear very dangerous, and finally, criminals who might be adjudged incorrigible. Each individual of these classes would undergo thorough examination, and only by due process of law would his life be taken from him. The painless extinction of these lives would present no practical difficulty--in carbonic acid gas we have an agent which would instantaneously fulfil the need."