=Feeble-Mindedness Often a Factor.--=The conviction is steadily growing among students of human heredity that a considerable amount of crime, gross immorality and degeneracy is due at bottom to feeble-mindedness and that, therefore, if we can once eliminate feeble-mindedness, these vicious accompaniments will at the same time in equal measure disappear. Goddard, for example, one of our authorities on the inheritance of feeble-mindedness, is convinced that a large proportion of the delinquent girls who fill our reformatories are actually feeble-minded. They are often the higher grade or moron type, and their mental condition remains unsuspected because they have never been thoroughly tested in this respect. =Many Delinquent Girls Mentally Deficient.--=According to Havelock Ellis, 2,500 of some 15,000 women who passed through Magdalen homes in England were definitely feeble-minded and were known to have added a thousand illegitimate children to the population. The preliminary reports of the so-called white slave investigations now in progress in New York City classes 25 per cent. of these unfortunate women as mentally incapable of taking care of themselves. Other investigations indicate that from 40 to 60 per cent. of this class of women are defectives. For example, from the report of the Massachusetts "Commission for the Investigation of the White Slave Traffic, So-Called," one reads: "Of 300 prostitutes, 154, or 51 per cent., were feeble-minded. All doubtful cases were recorded as normal. The mental defect of these 154 women was so pronounced and evident as to warrant the legal commitment of each one as a feeble-minded person or as a defective delinquent.... The 135 women designated as normal, as a class were of distinctly inferior intelligence. More time for study of these women, more complete histories of their life in the community, and opportunity for more elaborate psychological tests might verify the belief of the examiners that many of them were also feeble-minded or insane." The data from some of our public reformatories, industrial schools and state homes for delinquent girls, are very instructive in this respect. Reports from a number of such institutions show that many of their inmates are mentally subnormal. The proportions range from thirty-three per cent. in the New Jersey Reformatory at Rahway to eighty-nine per cent. in the institution at Geneva, Illinois.