226 Mammalia. 



in a direction parallel with the jaw, where it may be traced 

 in the fat across the Gustatory nerve to end in the mucous 

 membrane of the mouth. This ganglion also receives fila- 

 ments from the Chorda tympani, and from the Gustatory 

 nerve, which form a fine plexus in the triangle enclosed by 

 the Chorda, Gustatory, and main ganglionic filament. 



The Whartonian Duct takes very nearly a straight course 

 along a line drawn from the Symphysis to the angle of the jaw ; 

 which line also marks the lower margin of the Styloglossus 

 muscle. Three inches from the gland it is crossed by the in- 

 ferior branch of the Gustatory nerve. By the aid of the 

 bristle inserted into the duct, its course may be traced forwards 

 in close connection with the Gustatory nerve, along what 

 would be the inner side of the jaw, had it not been removed, 

 between the Styloglossus muscle and Sublingual gland, to 

 open into the mouth rather in front of the frsenum lingua3, 

 where it is protected by a thick papilla of mucous membrane, 

 called a harb in cattle, the opening being guarded by a plate 

 of cartilage. 



The Gustatory Nerve or lingual branch of the inferior 

 Maxillary division of the Fifth nerve will be notecf to have 

 descended under the anterior border of the internal Pterygoid 

 muscle, and to lie internal to, and to the front of the inferior 

 Dental Nerve* as it enters the jaw, at which point the Chorda 

 tympani is in close relation with it. It then crosses ob- 

 liquely to the side of the Tongue over the Superior Constrictor 

 muscle of the Pharynx, and reaches the Styloglossus muscle, 

 on the external surface of which it runs, and shortly after 

 divides into two branches ; the smaller branch continuing 

 straight along the margin of the tongue to the anterior 

 attachment of this organ, the larger branch descending to 

 cross the Whartonian (submaxillary) duct about an inch and 



* Cut short in the jaw. 



