170 1)11. C. V. SONxNTAU UN TlHi 



The meso-appendix, wliicli binds the cjecal appendage to the 

 poatevior sui-face of the cardiac stomach, is formed by peritoneum 

 derived from the coverings of both ventral and doi-sal surfaces of 

 tlie stomach. Its attachment to the cardiac stomach is much 

 shorter than to the anterior border of the appendage. 



The (Jasiro-IIe^xttic Omentum. 



Tlie gastro-hepatic omentvim runs fi'om the cesophagus, convex 

 lesser curvature of the stomach, and duodenum as far distally as 

 the entrance of the common bile-duct (Plate II. A) to the 

 diaphragm at the left side of the liver, and along the left half of 

 the posterior surface of the liver. It is wide and fan-shaped 

 with the base lying posteriorly and the narrower end fixed to the 

 diaphragm and liver. It fuses with the common mesentery, and 

 the structures forming the ventral boundary of the wide Foramen 

 of Winslow are common to both of them (Plate II. A, l). 



When the serous coats of the stomach are traced to the right 

 they are seen to separate and surround the first part of the 

 duodenum and become continuous with the common mesentery 

 (Plate II. A, g). This connection, therefore, forms an additional 

 means whereby the gut is fixed to liver and diaphragm. 



The Lesser Sac of the Peritoneum (Plate II. A ; text- 

 fig. 12, A). 



The long axis of the lesser sac describes an S-shaped course 

 from the Foramen of Winslow to the free edge of the great 

 omentum, and its general direction is posterior and to the right. 

 It is also tapering, for tlie Foramen of Winslow and part abutting 

 against the liver are much wider than the omental end. It also 

 lies mostly to the right of the stomach, and part of it is anterior. 

 Consequently, the disposition is different from that of most 

 Mammals, where it lies dorsal to the stomach. This curious 

 arrangement is due chiefly to the position of the pancreas, spleen, 

 and great omentum, and the relations of the layers of the omen- 

 tum to the limbs of the pylorus. 



The boundaries of the lesser sac from behind forwards are : — • 



To the right — pancreas and spleen enveloped by the layers of 



the dorsal sheet of the great omentum. 

 To the left — the two limbs of the pylorus and the beginning 



of the duodenum. 

 Dorsally — the so-called ligamentum hepato-cavo-duodenale of 



Klaatsch, which is a continuation of the right half of the 



suspensory sheet of the liver and covers the vena cava 



inferior. 



Ventrally — the great omentum, pylorus, first part of the 

 duodenum, and the fused sheet produced by the lesser 

 omentum and common mesentery. 



The above conditions resemble in many respects those of some 



