SEA-FISHERIES LABORATORY. 303 



anastomosis. On leaving the latter it bears another 

 moderate-sized ganglion (4), but no fibres were seen to be 

 exchanged between any of these ganglia and the glosso- 

 pharyngeus nerve. In front of ganglion 4, the cord rises 

 upwards and becomes attached to the Truncus hyoman- 

 dibularis, just as the latter emerges from the skull, the 

 post-trematicus vii. lying below it. It now passes into 

 the cranial cavity through the jugular foramen, and is 

 so closely pressed against the T. hyomandibularis that we 

 were unable to determine whether fibres were exchanged 

 or not, although we believe not. Inside the cranium, it 

 bears the small ganglion 3, from which the ganglionated 

 intracranial most anterior commissure (3 /r ) arises. The 

 commissural ganglion is situated actually on the root of 

 the sixth cranial nerve. 



From section 536 to 494 the cranial sympathetic 

 accompanies the R. palatinus facialis, and is very closely 

 attached to it. In front, it passes through the trigemino- 

 facial foramen, and takes up a position between the skull 

 and the origins of the maxillary and mandibular v. nerves. 

 It now swells into the large ganglion 2, from which a very 

 prominent R. communicans (com. v. 1 ) passes upwards to 

 the T. maxillo-mandibularis. The first cranial ganglion 

 (1) lies above the second, and is connected with it by a 

 very short strand of fibres. Both the first and second 

 ganglia give off a cord in front, but the two unite before 

 reaching the ciliary ganglion. The first ganglion also 

 gives off a nerve internally, which accompanies the ventral 

 edge of the 11. ophthalmicus superficialis v. The possibly 

 corresponding nerve of the other side arises externally 

 from the second ganglion, accompanies the superior 

 maxillary v., and has a very small ganglion of its own. 



From the first cranial ganglion onwards the sym- 

 pathetic is accompanied by the profundus nerve. They 



