12 



MORPHOLOGY OF THE 



The following five plates are progressive dissections of 

 this same embryo. 



In Fig. 6 those portions of the liver have been removed 

 which previously concealed the greater part of the stomach 

 and duodenum, while the rest of the organ remains undis- 

 turbed. The stomach, the great omentum attached to its 



Fig. 7. 



Dissectiou of the embryo 20^ mm. (Enlarged 10.6 diameters.) Z., liver. 

 Z)., duodenum. -/.. jejumim. N., stomach, .s.m.a.^ sup. mesenteric artery. 

 0.. omentum. Sp., spleen. C, colon. Cce., crecum. 



greater curvature, and the spleen, are clearly defined. The 

 lesser omentum has been taken away, which brings to light 

 the Spigelian lobe of the liver in close relation with the lesser 

 curvature of the stomach. The jDylorus, as well as the first 

 part of the duodenum lie posterior to the jejunum and colon. 



