10 



MORPHOLOGY OF THE 



jejunum is seen going to this coil, and the colon coming from 

 it. The caecum is extra-abdominal, but it is hidden by one 

 of the coils of the small intestine. A glance at Fig. 1 will 

 make these relations quite comprehensible. 



Fig. 5 represents a drawing of the abdominal cavity of 

 an embryo mm. The stage of development is the same 



Fig. 5. 



The ventral wall removed from an embryo 20| mm. The intestines which 

 were in the cavity of the umbilical cord have been cut away. (Enlarged 10.6 

 diameters.; i., liver. jejunum. Z)., duodenum. iS'., stomach, o., omen- 

 tum. Sp.^ spleen. C, colon. 



as the last, but the embryo is a trifle larger. The abdominal 

 wall has been removed and the coil of intestines, which was 

 so prominent in the last plate, has been cut away at the um- 

 bilicus, or, in other words, at the point of junction of the 

 cavity of the coelom with that of the umbilical cord, in order 



