DIGESTIVE TRACT OF THE CAT. 



15 



is rounded in form, much more vertical in position, and 

 nearer the median hne of the body than in an older embryo. 

 The liver conceals it, as well as the duodenum. The duo- 

 denum makes a horseshoe like bend which may be divided 

 into four portions, and at its termination it is fixed, and is 



Fig. 9. 



Concluded dissection of tlie embryo 20f mm. (Enlarged 10.6 diameters.) 

 duodenum, s. m. a., sup. mesenteric arter}^ -/., jejunum. Z., liver. S.^ 

 stomach. O., omentum. Sp.^ spleen. 



in relation with the superior mesenteric artery. This point 

 marks the commencement of the jejunum which curves 

 caudad and to the left, and then ascends to the umbilicus, 

 which is situated a trifle cephalad from the pylorus. The je- 

 junum then enters the cavity of the umbilical cord, and lies 



