492 



however, and was found in only two out of seven full-term foetuses. 

 This diverticulum evidently represents that portion of the previously 

 larger caudate fossa which has not yet become obliterated by adhesions 

 of the peritoneum, although no longer occupied by the caudate pro- 

 cess of the liver. 



In this connection it may be noted that in embryos of about 

 20 mm to 30 mm length the duodenum, together with the head of 

 the pancreas, rests in a deep grove or fossa on the lower surface of 

 the liver, so that the anterior surface of the head of the pancreas 



Fig. 2. Anterior view of the abdominal viscera in contact with the ijostero- 

 inferior surface of the liver shown in Fig. 1. The dotted line indicates the lower border 

 of the great omentum (which is riot represented). ^ 3. 



-1. C. ascending colon. D. C. descending colon. Diiod. Duodenum (first part and 

 beginning of descending). /. coils of small intestines. K. right kidney. Oes. oeso- 

 phagus. P. pancreas (area papillaris). ^;L plica gastro-pancreatica. PyJ. pylorus, r. root 

 structures of liver, cut across. Sjyl. hepatic surface of spleen. Supr. suprarenal body. 

 St. stomach. T. C. transverse colon, u. a. area of sui^rarenal uncovered by peritoneum. 

 V.C.inf. vena cava inferior. X diverticulum from the caudate fossa. 



