194 MAMMALIA. 



PLATE XXVIII. 



FIG. I. 



THE SYMPATHETIC NEBVE OF THE LEFT SIDE 



OF A BABOON. 



(SIMIA PAPIO.) 



a. STOMACH, b. Liver, c. Spleen, d. Pancreas, e. Termination of the ilium 

 in the colon. 



1. Prolongation of the sympathetic. 



2. Great splanchnic nerve ; its origin extends over the heads of five ribs ; it forms 



a ganglion with the prolongation before it passes through the diaphragm. 



3. Semilunar ganglion. 



4. Prolongation of the sympathetic of each side joining' on the caudal artery. 



5. Coeliac plexus. 



6. Right hepatic plexus. 



7. Superior mesenteric plexus. 



8. Inferior mesenteric plexus. 



9. Internal spermatic plexus. 



10. Hypogastric plexus joining branches of the sacral nerves for the bladder and 



rectum. 



11. Posterior trunk of the par vagum giving branches to the stomach, and then 



joining the coeliac plexus. 



