In this series of aggressive steps in the campaign against tuberculosis whereby one seeks out possibly infected children, brings them to a dispensary for examination, and separates them from their infected parents or house-mates, the social worker is the all-important executive. She finds the children, brings them or has them brought to the dispensary, and sees that financial aid or other assistance is given so as to carry out the isolation demanded by our bacteriological knowledge of the disease. V As far back as 1895 the reforms introduced by Calmette and Grancher in the field of tuberculosis had begun to modify and improve the treatment given in our dispensaries, not only to tuberculosis but to all other diseases. Especially it had favored the growth of home visiting, at first for the specific ends for which it was designed by Calmette and Grancher, but later for the prosecution of various related purposes which the very process of visiting brought to light. Not only in tuberculosis, but in other diseases, it was soon found that a knowledge of home conditions and of the family was essential for the treatment of the single patient who chanced to appear at the dispensary. It was my good fortune during the ten years preceding 1905 to work as a member of the board of directors of a private charitable society caring for children deserted by their parents, orphaned, cruelly treated; also for children whose parents found them unmanageable or for children who had special difficulties in getting on at school. The work of this society brought to me detailed knowledge of the life-histories of a good many children. I watched the careful studies made by the paid agents of the society into the character, disposition, antecedents, and record of the child, his physical condition, his inheritance, his school standing. I noticed during these years how the agents of this society, to whom the child was first brought by its parents or by others interested in it, utilized to the full the knowledge and resources of others outside its own field; how, for example, they enlisted the full coöperation of the child's school-teacher, secured facts and advice from the teacher, and agreed with her upon a plan of action to be carried out both by her and by the home visitor in concert. Moreover, I saw how physicians were consulted about the child, and how their advice and expert skill contributed something quite different from that obtained from the teacher or that gained by the home visitor herself. The priest or clergyman connected with the family was also asked for aid, and sometimes could give very great help, differing essentially in kind from that given by the teacher or by the doctor. If there were problems involving poverty on the part of the parents, other societies concerning themselves particularly with the problems of financial relief were asked to aid, in order that indirectly the help given to the parents might