This means, manifestly, that many agencies must co-operate in the regeneration of the curable dullard. How many are sometimes involved may perhaps be sufficiently indicated by detailing another case from Professor Witmer's extensive experience, the case of an eleven-year-old boy who was brought to the University of Pennsylvania's psychological clinic with a history of five wasted years in school. Any suspicion that this boy might belong to the ranks of the truly feeble-minded was dissipated by the results of the exhaustive mental testing through which Professor Witmer put him. This showed not only that he was naturally intelligent, but also that he was of an affectionate, generous, and thoughtful disposition. When, however, a physical examination was made, ample reason for his dullness was discovered, for it was found that he was suffering from adenoids, enlarged tonsils, weakness of vision, and dental trouble, his teeth being decayed and unclean, with tartar pushing back the gums, which were inflamed and swollen. In addition, he was stoop-shouldered, had an irregular heart action, and showed signs of being poorly nourished. "Before anything can be done to improve your boy's mental state," it was explained to his mother, "his physical condition will have to be improved. He should be put under treatment without delay." Then began a distressful period for the hapless youngster. First of all, a throat specialist operated on him for the removal of the adenoids and the hyper-trophied tonsils. After this he was sent to the eye clinic, where he was fitted with glasses. Next, he was taken to the dental clinic, where his teeth were cleaned and filled. All the while a trained social worker kept in touch with his parents to make sure that he would receive the hygienic care which had hitherto been wanting. In the meantime, he was allowed to return to school, from which, after the beginning of the summer vacation, he was transferred to a special school for backward boys. Here he remained most of the summer, being given individual attention with regard to his mental and physical needs. It was noticed at first he was inclined to be quick-tempered and disorderly; but under the tactful handling he received he soon settled down. From being puny and delicate, he became an active, vigorous boy, excelling in the swimming-pool and the gymnasium. At his books he also made such progress that, on returning to regular school in the autumn, he was promoted through two grades in less than six months, being then only one grade behind normal and giving every promise of catching up with the boys of his own age in another six months.