INTESTINAL TKACT OF BIRDS. 



Fig. 3. 



183 



Intestinal Tract of Uliea aunr'ic ma, 



X, x\ cut ends of " bridging" factors of duodenal vein, draininu; the distal portion of ileckel's tract and one 



caecum ; r, factor of the splenic vein. General description as in legend of figure 1. 



Fit?. -1. 



~>I 



^ x> 



Intestinal Tract of Apterij.v ManieUi. 

 For explanation, see legends of figs. 1 and 3. S.D.K, apex of supra-duodenal loop. 



29* 



