To call this paper or any other paper the end result of a case finding project is really a mistake. The nature of the disease tuberculosis is such that no end result can be determined within the space of five, ten or even fifteen years. Hence our presentation, which is a three to five year follow-up, can hardly be termed an end result. There are, however, certain important facts that have been determined by this work and these we wish to present.
Prior to the advent of the x-ray and tuberculin test, physicians depended on contact history, subjective symptoms and physical examination for the diagnosis of tuberculosis. The objection to these methods was that the cases uncovered were almost invariably in an advanced stage and treatment was either prolonged or unsuccessful. With the perfection of the x-rays, suspected cases could be checked. This led to earlier diagnosis but it was