FIG. 36. ABDOMINAL WALL OF GUINEA-PIG SHOWING DIPHTHERIC EDEMA. 

 Shows abdominal wall of a guinea-pig forty-eight hours after subcutaneous in- 

 jection with 2 c.c. of a seventy-two-hour bouillon culture of a diphtheria bacillus 

 isolated from the throat of a diphtheria convalescent. 



