168 MAMMALIA. 



corresponds with the inferior branch only in man, passes to the lateral nasal nerve 

 of the second trunk of the fifth, with which it forms a ganglionic union ; filaments are 

 also sent towards the par vagum, the glosso-pliaryngeal and ninth at their exit from 

 the cranium ; there is another ganglion connected with a portion of the third trunk 

 of the fifth, termed by Arnold otic ; it may also be well seen in the sheep. The otic 

 ganglion communicates with the buccal, and the trunk giving off the gustatory and 

 inferior dental nerves, and sends a branch to the internal pterygoid muscle ; it sends a 

 branch along the Eustachian tube, where it divides into two, one of which joins the 

 branches of the sympathetic in the tympanum, the other terminates on the tympanum. 

 From the superior cervical ganglion branches proceed to the pharyngeal plexus, and 

 along the carotid artery, for supplying the coats of the branches of this and also the 

 salivary glands. In the sheep the superior cervical ganglion is oval, two small and 

 two larger filaments ascend from it, and appear to form a plexus, from which the Vidian 

 passes to the lateral nasal nerve, and two branches to the Gasserian ganglion, with 

 which they become incorporated. In the ass the superior cervical ganglion is longer, 

 but not so thick as in the calf, and resembles very much that in man ; branches ascend 

 from it, which form a plexus round the internal carotid artery ; some filaments are 

 connected with others from the glosso-pharyngeal to be distributed on the membrane 

 lining the tympanum ; the principal portion turns forward at an acute angle, and is 

 joined by others, it then gives off filaments to the second trunk of the fifth and the 

 sixth, and to the hard portion, whilst the Vidian passes forward at the inner side of 

 the Eustachian tube, and then passes in a bony canal a short distance, and joins the 

 nerve arising from the second trunk of the fifth, which divides into the lateral nasal 

 and palatine, but it does not form a ganglion ; below it communicates with the par 

 vagum, accessary, ninth and sub-occipital, and gives branches to the carotid artery 

 and the pharyngeal plexus. In the pig the branches ascending from the superior 

 cervical ganglion may be traced to the second trunk of the fifth and the sixth nerve ; 

 there is not a distinct Vidian nerve passing in a canal of bone, as in the calf and ass, 

 but the branch most resembling it can be traced on the second trunk of the fifth to 

 the place whence the palatine and lateral nasal nerves proceed ; the other branches 



