AVES. 



PLATE XXI. 



THE PELICAN. 



(PELECANUS ONOCEOTALUS.) 



FIG. I. 



^ . . 



IN making the preparation from which this plate was taken, the skin, the 

 oesophagus, the pharynx, and lower jaw, were divided in the median line, and turned 

 outwards ; the lining membrane of the oesophagus and pharynx were carefully 

 separated, and the nerves partially traced, portions of the lower jaw and of the upper 

 were then removed, for showing their continuations. In all similar subjects where the 

 parts are very thin, after a slight separation' of some of them, the subject should be 

 immersed in water for a few hours, .and afterwards kept in very weak spirits during 

 the progress of the dissection, for if it should be at first placed in alcohol, the nerves 

 and membranes become so impacted on each other, and so soon dry on exposure to the 

 air, as to make the dissection very unsatisfactory. 



1. Third nerve. 



2. First trunk of the fifth, sending off branches to the palatine or inferior surface 



of the upper jaw, and at a short distance from the beak giving off a large 

 branch to distribute filaments on the superior surface of the anterior portion 



