20 



THE DOMESTIC SHEEP. 



heart through the arteries by which it is poured into the 

 system of capillaries. These pervade every part of the 

 body, internally and externally, and are so closely distrib- 

 uted that no part of the system can be punctured by the 



THE INTESTINES AND MESENTARY. 



1. The duodenum. 2. The jejunum. 3. The ileum. 



4. The coecum, being the anterior prolongation of the colon, or 

 first large intestine. The ileum opens into this (on the back side as 

 presented, in the cut), about 12 inches from its extremity, the opening 

 defended by a valve. 



5. The large anterior portion of the colon, retaining its size, 

 (about three times that of the smaller intestines) for about two feet. 



6.6. The colon tending toward the center. 



7.7. The returning convolutions of the colon. 



8. The rectum or straight gut, communicating with the anus. 

 9.9. The mesentary, or that portion of the peritoneum which re- 

 tains the intestines in their places. 



10. The portion of the mesentary supporting the colon, &c. 

 The united length of these intestines is upward of sixty feet. 



