dysentery convalescents may have been partially due to the fact that the carriers of the two organisms were isolated within the same building. The stools of 2 patients (24 and 28), who were also recognized as typhoid carriers prior to the administration of sulfa¬ guanidine, continued positive for Eberthella. The drug failed to affect this organism, although the disappear¬ ance of the dysentery bacillus from the intestinal tract was prompt and apparently permanent. We have not yet attempted a deliberate trial with sulfaguanidine in an effort to reduce the number of typhoid carriers.