Deficiency in body weight is generally recognized as one of the important early symptoms of tuberculosis. In adults this is frequently synchronous with the appearance of focal symptoms. In childhood, focal symptoms play so unimportant a rôle in the early differential diagnosis of tuberculosis, and are so lacking in pathognomonic features, that it seems necessary to determine whether deficiency in weight can be considered of value.
Two groups of children form the basis of this study: the first group, those of nontuberculous parentage, who were themselves either without any symptoms suggestive of tuberculosis, or who had symptoms and were negative to tuberculin tests. This constituted the control group (614 children). This series was observed in the pediatric department of the West Side Jewish Aid Dispensary. The second group, comprising 508 patients, was observed in the course of a number of years at the West Side Jewish Aid Branch of the