to swell the lists of pension claimants. But the psychological tests, though they did not entirely eliminate these dangers, certainly reduced them to a minimum, enabling line-officers to equalize the mental strength of their commands by the reassignment or transfer of men to less exacting duties, or, in the case of those who were actually feeble-minded, securing their discharge from the army and returning them to their homes. To the Division of Laboratories and Infectious Diseases were assigned the duties of ascertaining the causes of communicable diseases and of establishing methods for their control. The immensely important work of this division was handled by five sections, as follows: (1) The Section of Laboratories, whose duty it was to furnish and train personnel, supervise the work of the laboratories, and standardize the equipment. (2) The Section of Epidemiology, which followed the progress of disease and recommended measures of control. (3) The Section of Urology and Dermatology, which was specially charged with the treatment of venereal disease. (4) The Section on Combating Venereal Diseases, which elaborated and executed measures for educating the soldier on this subject, for the enforcement of legal measures against immoral conditions, and for venereal prophylaxis or early treatment. (5) The Army Medical Museum, which collected pathological material and other specimens of interest to medical men, the scope of its activities being greatly enlarged by the formation of an organization for collecting material in the field.