472 



DR. P.- CHALMERS MITCHELL ON THE 



blood-vessels of Meckel's tract, so that when it is dissected away, as in the figure, 

 it appears to have neither mesentery nor blood-vessels. The rectum or most distal 

 portion of the hind-gut is relatively short and very little convoluted, and is supported 

 by the usual mesentery. 



The anterior mesenteric branch of the portal system follows the course of Meckel's 



Fig. 19. 



Intestinal Tract of Tragulus meminna. 



S. Cut end of duodenum near stomach. 

 R. Cut end of rectum near anus. 

 C. Cajcum. 

 S.P. Spiral coil. 

 S.P. Supra-Meckelian fold. 

 X, X. Cut ends of posterior mesenteric vein. 



tract, receiving factors from the subsidiary loops with almost diagrammatic simplicity. 

 Distally a separate and slightly enlarged factor drains the caecum. The posterior 

 mesenteric or rectal vein has the normal course, and receives the vein which drains 

 the spiral fold. 



