THE Research Division of the American Child Health Association has just published a report of its survey of cities of 70,000 to 100,000 population. Diagnosis before treatment-this is the lesson of the latest survey volume. Because the professional leadership of the American Child Health Association was unwilling to plunge into advice and community programs without background, without facts of experience and practice before them, there was a logical demand for the periodic health examination of a lot of presumably healthy American communities. Here we have case histories of our very neighborly small cities in such abundance that