If we consider the worst condition so far as intellectual deficiency is concerned, we find it in the reformatories and training schools for women. Dr. Weidensall applied the 1908 Binet scale to 200 consecutive women, 16 years to 30 years of age, as they were admitted to the New York Reformatory for Women at Bedford. Seventy-seven tested IX or under and were within our presumably deficient group. An additional 74 tested X and were in the uncertain group, although if we regard them all as deficient because of their persistent delinquency, we have a total of 75% (_59_). These results were duplicated by Dr. Fernald (_16_). She tested 100 other consecutive cases with the 1911 scale and found 41% tested below X, our presumably deficient group. She regards these as “feeble-minded with certainty.” Dr. Katherine Bement Davis, the former superintendent at Bedford, estimated herself that among 647 prostitutes who were inmates there, 107 were “feeble-minded (distinctly so);” 26 “border-line neurotic;” 26 “weak-willed, no moral sense;” 11 “wild, truant, run-a-ways.” This makes a total of 26% of this group whom she apparently thought might possibly be classed feeble-minded or of questionable mentality because of deficient intellect or will (_11_). It is quite clear that the objective tests give a much better basis for comparison of the Bedford group with those which are to follow. The professional prostitute confined in institutions for delinquents has been carefully studied and tested by the Massachusetts Commission for the Investigation of the White Slave Traffic, So Called (_36_). Three groups of 100 each were examined “without selection, except that all had a history of promiscuous sex intercourse for pecuniary gain.” One of the groups consisted of young girls under sentence in the State Industrial School for Girls, the House of Refuge and the Welcome House. A second group consisted of those just arrested and awaiting trial in the Suffolk House of Detention in Boston. The third was made up of women serving sentence in the State Reformatory for Women, the Suffolk County Jail and the Suffolk House of Correction. “These three groups represent the young girls who have just begun prostitution, the women plying their trade on the streets at the present time, and the women who are old offenders.”