286 Journal of Comparative Neurology, 



That none of the terminal buds on the lower lip are sup- 

 plied from the r. mandibularis VII (as occurs in Menidia) I 

 think is certain, for that nerve in Gadus carries no appreciable 

 number of fine fibers into the mandible, nor can any of its 

 fibers be traced into regions where these buds abound. 



p. The Ramus Palatinus. 



The origin of the r. palatinus from the geniculate ganglion 

 has already been described. Upon emerging from the cranial 

 cavity through the common trigemino-facial foramen it curves 

 around the ventral side of the VI nerve (Figs. 8, 9) and passes 

 over the ^?i. adductor arcus palatini and under the m. rectus 

 externus toward the median line. It continues cephalad close 

 to the parasphenoid bone and above the m. adductor arcus 

 palatini for a long distance, far cephalad of the brain, before it 

 passes down through the muscle to he in its customary position 

 adjacent to the mucosa of the roof the mouth. This mucosa 

 carries taste buds both in front of and behind this point. Fibers 

 appear to work their way down through the muscle to the sub- 

 jacent mucosa and there spread out for the taste buds. This 

 course of the nerve through the muscle is doubtless the expla- 

 nation for the statement of Stannius ('49, p. 56) that the 

 branches of the r. palatinus supply the m. adductor arcus 

 palatini. 



Other communis fibers arise from the ventral end of the 

 geniculate ganglion along with the r. palatinus, as described in 

 connection with the communis roots. This large bundle of 

 fibers lies just within the trigemino-facial foramen and the first 

 spmpathetic ganglion lies just external to it, both internally of 

 the other emerging roots of the trigemino-facial complex (Fig. 

 6). This level lies some distance cephalad of the ventral part 

 of the geniculate ganglion from which these communis fibers 

 arise and, though the sympathetic ganglion here rises up and 

 lies in contact with these facial fibers, there is no opportunity 

 for confusion of its cells with those of the geniculate ganglion. 



There is an interchange of non-medullated fibers between 



