from whom there have descended in the direct line four hundred and eighty individuals. One hundred and forty-three of these are known to have been feeble-minded, and only forty-six are known to have been normal. The rest are unknown or doubtful. Thirty-six have been illegitimate; thirty-three, sexually immoral, mostly prostitutes; twenty-four, alcoholic; three, epileptic; eighty-two died in infancy; three were criminal, and eight kept houses of ill-fame. After the war, Martin Kallikak married a woman of good stock. From this union have come in direct line four hundred and ninety-six, among whom only two were alcoholic, and one known to be sexually immoral. The legitimate children of Martin have been doctors, lawyers, judges, educators, traders, landholders, in short, respectable citizens, men and women prominent in every phase of social life. These two families have lived on the same soil, in the same atmosphere, and in short, under the same general environment, yet the bar sinister has marked every generation of one and has been unknown in the other."
If it were possible to improve or eradicate these defective strains by giving them better surroundings, the nation might easily get rid of this burden. But we have given reasons in Chapter I for believing that the problem can not be solved in that way, and more evidence to the same effect will