MAMMALIA. 217 



tympanum to communicate with the tympanine nerve of the glosso-pharyn- 

 geal, and the cord of the tympanum on the outer surface of the labyrinth ; 

 then, like the Vidian nerve, passing forwards in a canal to join the nasal 

 branch of the second trunk of the fifth, and assume a ganglionic appearance. 



3. A branch of the superior cervical ganglion of the sympathetic, which joins 



branches of the glosso-pharyngeal and the trunk of the par vagum ; branches 

 are then given to the pharynx, whilst others accompany the divisions of the 

 carotid artery to the salivary glands, and other parts on which these vessels 

 are distributed. 



4. Prolongation of the sympathetic passing to the trunk of the par vagum ; it 



passes near to the bottom of the neck, connected with this by loose 

 neurilema, and also by several nervous filaments. 



5. Third nerve ; it supplies all the muscles of the eye, except the superior oblique, 



the abducent, and the retractor ; it communicates with a branch from the 

 fifth in the ciliary ganglion, which sends branches along the optic nerve, and 

 through the sclerotic coat into the eye to the choroid coat and iris ; these 

 branches are fewer and thicker than in man. 



6. First trunk of the fifth, dividing into the supra-orbital and superior nasal ; the 



supra-orbital passes out at the upper part of the orbit to the upper eyelid and 

 integuments of the forehead ; the superior nasal enters a foramen at the inner 

 side of the orbit to pass to the cribriform plate of the ethmoid bone, then 

 passes through one of the perforations into the nose, and divides into two 

 branches, one of which is continued on the Schneiderian membrane at the 

 superior part of the septum, and the other on that covering the superior 

 turbinated bone ; both give branches to the membrane near the anterior 

 extremity of the nose, which part is supplied by branches of the second trunk 

 of the fifth, passing into the nose just above the nostril. 



7. Lachrymal nerve arising from the Gasserian ganglion with the nerve 9 ; it gives 



branches to the lachrymal gland, and sends one forward to the upper eyelid. 



8. Two branches from the Gasserian ganglion, passing to the lower eyelid, and 



resembling the malar portion of the malar nerve. 



9. A nerve corresponding with the temporal portion of the malar ; it passes out at 



F F 



