REPORT OF CASE A woman, aged 59 years, complained of symptoms typical of duodenal ulcer, which had been present for only a few months and were gradually increasing in intensity. She had been constipated for years. She was of medium stature, well nourished, but not obese. Her weight had remained constant for several years. She had had the ordinary diseases of childhood and had borne three children. Fifteen years before the present complaint, while living in one of the Southern states, she had had amebic dysentery and had been treated in a hospital for six weeks with apparent cure. The clinical diagnosis of duodenal ulcer was confirmed by roentgenogram and later at operation. These roentgenograms have since been carefully studied, but they show no evidence of jejunal diverticula. At the operation, Jan. 24, 1917, in picking up the jejunum, preparatory to performing a posterior gastrojejunostomy, five diverticula of the jejunum