1. Progress in attaining the objectives of a mental hygiene component in a city health district is reported.2. The 1933 survey indicates that 25 per cent of all psychotics in the district are not hospitalized.3. Personality disorder of varying severity but sufficient to attract attention by the community is present in about two per cent of the population.4. Methods of prophylactic work in connection with a well baby clinic of a city health department are outlined.5. The properly educated public health nurse can be an excellent agent for the dissemination of knowledge of mental hygiene principles.