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Partial gastrectomy has in recent years been coming more and more into prominence in the treatment of duodenal ulcer. The all too frequent occurrence of marginal ulcer after gastro-enterostomy has led surgeons to seek some method of approach to the problem of duodenal ulcer by which the acidity of the gastric secretions could be reduced and the incidence of marginal ulcer diminished. The studies of Klein,1Lewisohn and Ginzburg,2Lewisohn and Feldman,3de Takats,4Winkelstein,5Crohn,6Wilensky and Crohn,7McCann8and others seem to leave little doubt that after partial gastrectomy there is a definite reduction in gastric acidity. When one attempts to explain this reduction in acidity, however, one is confronted with a great deal of conflicting evidence; before the value of partial gastrectomy in the treatment of duodenal ulcer can be determined, some more definite information as to its mode

While conducting a series of observations on the effect of intravenously injected emulsified fat on the emptying of the gallbladder of cats, we fortuitously encountered a case of pancreatic bladder. Although twenty-three cases of well defined pancreatic bladders have been recorded in the literature during the last twenty-three years, the anomaly is exceedingly rare; it appears only in the domestic cat. Since this is the first time an anomaly of this sort has been observed in our laboratory, and since its structure so satisfactorily supports the hypothesis of a pancreatic origin, we are including the description of the case in the slowly accumulating literature on aberrant pancreatic lobes and vesicles. Boyden 1 (1925) not only described six new cases of the aberrant variation, but presented for the first time adequate histologic and embryologic data in support of the origin for pancreatic bladders wholly independent of the extrahepatic biliary system. Bean

Posterior gastro-enterostomy performed in properly selected cases has long been accepted as one of the most satisfactory procedures in the treatment of duodenal ulcer. Two reasons have generally been advanced in explanation of its efficacy. First, it has been stated that the formation of a gastro-enterostomy stoma allows the gastric contents to pass into the jejunum without going through the duodenum, thereby removing the irritation of acid and food and allowing the ulcer to heal. Roentgenologists have taught, however, that in most patients unless the pylorus is completely obstructed the gastric contents leave the stomach to a large degree not through the gastro-enterostomy stoma but through the pylorus; and in spite of the fact that the ulcer continues to be exposed to the irritation of gastric contents, though perhaps for not so long a time, it usually proceeds to heal. The second explanation which has been offered is that gastro-enterostomy