188 MAMMALIA. 



the junction of the two nerves forming the posterior cord, and gives branches 

 to the second and third stomachs, and a large one to pass over the third to 

 the fourth, and to be continued along the smaller curvature of this and 

 communicate with filaments of another branch passing in the small omentum, 

 and forming the left hepatic plexus ; it communicates also with branches of 

 the right hepatic plexus, which proceed from the right semilunar ganglion, 

 and accompany the pyloric artery ; branches from the left hepatic plexus, 

 pass first on the duodenum and then towards the other branches of the 

 anterior trunk of the par vagum just described. The trunks of the par 

 vagum give branches to the various stomachs, and their mode of doing it 

 seems to be more for convenience than for any difference there is between 

 the anterior and posterior divisions of these nerves. 



9. The continuation of the right trunk of the par vagum becomes joined to an 

 equal portion of the left, and forms the posterior cord ; its junction sends a 

 branch to the smaller or anterior branch 8, just when this has passed 

 through the diaphragm ; it sends downwards branches, as soon as it has 

 passed through the diaphragm, to the plexus of the semilunar ganglia, 

 surrounding the cardiac and superior mesenteric arteries ; a great part of it 

 then terminates principally on the great bag or first stomach, but it sends 

 another large branch, filaments of which also communicate with branches 

 from the semilunar ganglia sent on the arteries of the stomach, and then 

 passes to terminate in the back of the third and fourth stomachs. 



10. Recurrent nerve. 



11. Phrenic nerve. 



