TWO ANOMALOUS FORMS OF DUODENAL POUCHES. 113 



paraffin, showed that the walls of the pouches, which were very 

 thin, were only composed of mucous membrane. 



Although Santorini's duct was not found, it seems possible 

 that these two pouches were related to it, in the same way 

 that the ordinary duodenal pouches are to the biliary papilla. 



The distance of the opening of Santorini's duct from the 

 biliary papilla varies, according to Letulle and Nattan-Larrier, 

 between 10 millimetres (-39 inch) and 35 millimetres (1-38 inch), 

 so these pouches are well within these extremes in point of 

 distance. 



VOL. XXXY. (N.S. VOL. XY.) — OCT. 1900. H 



