The case which I have to report is one of some interest from the rather infrequent occurrence and from the fact that the<i>Bacillus aerogenes capsulatus</i>was obtained from the wound six days before death. W. F.—Age 23, black, male, single, laborer, muscular and vigorous; family history negative. Entered hospital January 27, died Feb. 4, 1903. Gave history of having had a "sore throat," with considerable swelling of left side of the neck in the region of the tonsil. The symptoms referable to the throat lessened, but the external conditions became worse, developing considerable swelling and pain. His physician, seeing him for the first time at night, made the diagnosis of erysipelas. Later the diagnosis at the hospital was made of suppurative cellulitis of face and neck. At this time his pulse was 128, respiration 30, temperature 102. An incision was made, from which a small amount of dark fluid