AMPHIBIA. 75 



with two of the branches of the third trunk of the fifth issuing from the 

 inferior part of the lower jaw, to be distributed a little more forward on the 

 membrane and skin covering this part. 



6. First cervical nerve. 



7. Branches of cervical nerves given to the integuments. 



FIG. II. 



(THE SAME.) 



1. TRUNK of the par vagum. 



2. Recurrent nerves, which are very small ; a great p&rtion of the trachea 



receiving filaments from the trunk of the par vagum. 



3. Trunk of the par vagum passing downwards to be united with its fellow ; but 



the union takes place lower than is here represented. 



4. Continuation of the sympathetic in the form of a plexus near the vertebral 



artery ; in the neck, for some distance, it appears to join branches of the 

 spinal nerves issuing from between the attachments of the muscles on the 

 anterior part of the spine, near to the extremities of the ribs, to be distri- 

 buted on the oesophagus. 



FIG. III. 



(THE SAME.) 



1. CONTINUATION of the first trunk of the fifth, as in 5, Fig. 1, Plate XVIII., to 

 terminate on the skin at the end of the nose ; before leaving the orbit, it 

 also gives off a ciliary branch, and one to the skin above the upper eyelid. 



L 2 



