The reason given by the advocates of this law is the alarming prevalence of feeble-mindedness with its tendency to criminality; and as, they say, heredity accounts for 65 per cent. of feeble-mindedness, the feeble-minded should be prevented from propagating their kind. Sweden, with 5,500,000 inhabitants, has 18,000 insane, 14,000 idiots, 20,000 imbeciles, and 7,000 epileptics. Much of this degeneracy is due to the notorious alcoholism of the Swedes, which only lately has been brought under some control. Pennsylvania had about 17,000 feeble-minded in 1913. In a single county almshouse in that State were 105 women who had given birth to 101 defective children. One feeble-minded couple in the same State had 19 defective children; two other families had 9 imbeciles and 7 idiots. In New Jersey the history of 480 individuals of the famous "Kallikak" family (a pseudonym), descended from a feeble-minded woman who lived at the time of the Revolutionary War, has been traced out, and of these descendants only 40 were normal. New York State has 32,000 known feeble-minded persons. One State school for the feeble-minded in Indiana in 1908 had 1054 inmates. There are 6000 mentally defective children in the schools of Chicago. An investigation made in Illinois about 1907 brought out the conclusion that all the defectives and delinquents in that State at the time could be traced to 150 families. Poehlmann of Bonn traced the descendants of one female drunkard through six generations in 800 individuals, and of these 107 were illegitimate, 102 were beggars, 181 were prostitutes, 76 were criminals in a grave degree, 7 were murderers, and they had cost the State $1,206,000. The Jukes sisters, two illegitimate prostitutes in New York State, in five generations bred 709 criminals. Fifty-two per cent. of the women were prostitutes, whereas the ordinary ratio of prostitutes to other women is 1.66 per cent. Alcoholics engender degenerates. In three generations of 215 French alcoholic families, Legrand found that 60 per cent. of the children were degenerates. Bourneville found that 62 per cent. of 1000 idiotic, epileptic, and feeble-minded children in Paris had alcoholic parents.