DIGESTIVE TRACT OF THE CAT. 



13 



The second portion of the duodenum rests upon the caudate 

 lobe of the hver, while the beginning of its third portion (the 

 dotted line) disappears behind the jejunum and its mesen- 

 tery. The + on the jejunum in Fig. 6 corresponds in 

 position with the + on the jejunum in Fig. T. 



Fig. 8. 



Continued dissection of the embryo 20f mm. (Enlarged 10.6 diameters.) 

 Z>., duodenum, s. m. a., sup., mesenteric artery. ./,, jejunum. Z., liver. 

 >S'., stomach. 0., omentum. Sp., spleen. 



This figure is the same stage of dissection as the last, 

 except that the coils of intestine have been turned down, 

 instead of being removed, so as to bring the mesenteries and 

 the caecum into view. The mesentery of the duodenum 

 may be seen resting upon the caudate lobe, and the huge 



