NERVUS TERMINALIS IN AMIA 115 



15. Ganglion cells are found along this ramus of the trigeminus 

 nerve intra-cranially. Their maximum number is about thirty 

 on a side in the adult. 



16. There is reason to think the paraphysis has its intrinsic 

 nerve supply. 



17. The epiphysis, or pineal stalk, is innervated richly with 

 a type of cells and fibers much like the sympathetic plexus found 

 in the intestinal walls of vertebrates. It sends about forty fibers 

 centrally into the brain past a glandular structure at its base. 

 Some of these fibers seem to pass to the habenulae, but the great 

 majority were lost in proximity to the walls of the third ventricle. 



18. There is some evidence that the innervation of the pineal 

 stalk, also, is connected with the post-optic sympathetic system 

 through the trigeminus nerve. 



19. In a number of specimens there was found to be a bundle 

 of about a dozen fibers running in the fold of pallium between the 

 halves of the forebrain in adults. This is capable of connecting 

 the nervus terminalis with the post-optic sympathetic system, 

 but the main connection is probably by a bundle ventrad from the 

 entrance of the trigeminus nerve into the cranial cavity and thence 

 along the internal carotid artery to the olfactory bulbs. 



20. The nervus terminalis has been found in Lepidosteus and 

 in teleosts. 



Buchtel College, Akron, Ohio. 

 November 20, 1909. 



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1895 der embryonalen Teleostier. Sitz. der Gesell. f. Morph. u. Physiol, 



zu Miinchen. p. 73, Bd. 11. 

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1897 calva. Jour. Morph., vol. 12, no. 3. 



Beard, J. The ciliary and motoroculi ganglion and the ganglion of the ophthal- 



1887 micus profundus in sharks. Anat. Anz., vol. 2, no. 18, 19, pp. 565- 



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 Bedford, E. A. The early history of the olfactory nerve in swine. Jour. Comp. 



1904 New. and Psych., vol. 14, p. 390. 



