A bacteriological report by Captain J. A. Arkwright, R.A.M.C., was as follows :—" ° (a) B. typhos. para A in pus removed from empyema. (b) Ten days after operation : . Positive agglutination of B. typh. A 1/400 ; negative B. typh. B 1/100." . The chief interest lies in the bacteriological report as to the presence of B. typhosus para. A in the pus. The question as to whether the patient had a primary lung affection remains uncertain. At first I thought the collapse after the operation (about 12

more »

... hours) was due to a pneumonic crisis, but the clinical signs gave no support to that, and with the evacuation of the pus all pulmonary signs cleared up rapidly. The early removal of the tube is interesting, and was possible because we were dealing with a very acute empyema.