AVES. 



Ill 



this artery to the liver, the upper portion of the small intestines and the 

 gizzard, and on this organ communications take place with branches of 

 the par vagum. 



4. Second large splanchnic nerve formed by branches from the prolongation and 



several thoracic ganglia, it corresponds more particularly with the splanchnic 

 nerve of mammalia ; it passes to the renal capsule, with which it becomes 



i 



intimately united, and then distributes its branches to the small intestines, 

 and the ovaries or testes. 



5. Recurrent branch of the par vagum. 



6. Union of each trunk of the par vagum passing to the gizzard. The par 



vagum, after having communicated with the sympathetic, the glosso- 

 pharyngeal, and the ninth, passes down the neck, accompanied by the 

 internal jugular vein : on the right side it extends over the arch of the 

 aorta, and sends the slender recurrent nerve round this vessel to the 

 oesophagus ; it then gives branches to the lungs, and passes over the right 

 branch of the pulmonary vein to the left side to join the left trunk, after 

 giving filaments to the pulmonary artery and vein. The left trunk near 

 the bifurcation of the trachea sends up its slender recurrent nerve, which 

 gives filaments to the trachea, but its principal part terminates on the 

 oesophagus ; it gives filaments to the lungs, and sends a large branch down 

 on the oesophagus to terminate on the enlarged part of this canal near the 

 gizzard ; it then passes over the pulmonary vein after having given filaments 

 to this and the pulmonary artery ; it is then joined by the right trunk, and 

 one cord is thus formed, which passes down on the front of the ossophagus 

 to terminate on the gizzard, after it has communicated with filaments from 

 the splanchnic nerves accompanying the coeliac artery. 



