MAMMALIA. 167 



thus it varied with this nerve in three species of the dog. In simise the superior 

 cervical ganglion is rather pyriform, the Vidian nerve is connected with the indistinct 

 representative of the spheno-palatine ganglion in man, and divides into two branches ; 

 the superior to join the hard portion of the seventh, and the inferior to join the sympa- 

 thetic in the carotic canal. In other animals the greatest portion of the sympathetic 

 ascending from the superior cervical ganglion passes to the part of the Gasserian 

 ganglion giving off the first and second trunks of the fifth. In the dog the superior 

 cervical ganglion is pyriform, and less than it usually is in man ; branches ascend to 

 join the fifth and sixth nerves, and one branch corresponding with the Vidian proceeds 

 forwards to form a ganglion on the floor or the inferior surface of the orbit, just at the 

 inner side of the second trunk of the fifth, and join the nerve arising from this, and 

 dividing into the lateral nasal and palatine. In the jaguar the superior cervical 

 ganglion is thick and pyriform, it sends filaments upwards, which communicate with 

 the glosso-pharyngeal, and the conjoined par vagum, accessary and ninth ; it sends 

 off the Vidian nerve, which forms a ganglion on the floor of the orbit, at the inner 

 side of the second trunk of the fifth nerve, and is intimately connected with the lateral 

 nasal nerve, but communicates in an indirect manner with the palatine nerve ; the 

 ascending prolongation passes over a considerable part of the petrous portion of bone 

 in many filaments, some of which communicate with the tympanine branch of the 

 glosso-pharyngeal, but the greatest number creep over this bone to the fifth nerve, 

 whence a branch is sent to join the hard portion of the seventh ; many of the filaments 

 appear to be continued on the inferior surface of the Gasserian ganglion, and some to 

 communicate with the sixth, and others to be extended to the rete mirabile. The 

 superior cervical ganglion below communicates with the first cervical nerve, the 

 pharyngeal plexus, and the laryngeal nerve, and sends branches on the ramifications 

 of the external carotid artery, and then gives off the prolongation to be loosely 

 attached to the trunk of the par vagum. In the calf the superior cervical ganglion 

 is thick and oval ; it sends a branch into the tympanum to join the tympanine nerve ; 

 it communicates with the sixth, and by a branch with the hard portion of the seventh, 

 instead of the superior branch of the Vidian as in man, whilst the Vidian, which 



