SUB LES PROPRIÉTÉS DES RACINES DES NERFS RACH1DIENS. 579 



Mémoire original. 

 » prolongement médullaire du cer- 

 » veau que du cervelet. » In ganglion 

 se forme sur ce nerf près de son ori- 

 gine, bien que quelques-uns de ses 

 fi aments passent outre sans pénétrer 

 dans le ganglion. Avant de sortir du 

 crâne, le nerf se partage en trois 

 grandes brandies qui se rendent à la 

 face, aux mâchoires et à la langue. 

 Ses rameaux pénètrent linemcnt dans 

 la peau ainsi que dans tous les mus- 

 cles, « et ils abondent spécialement 

 » dans les muscles qui font mouvoir 

 » les lèvres sur les dents » (p. 409- 

 410) (*). 



(*j OF THE TRIGEMINUS OR FIFTn PAIR. 



In ail animais that have a stomach, 

 with palpi or tentacula to embrace their 

 food, the rudiments of this nerve may be 

 perceived; and always in thevermes, that 

 part of their nervous system is most easily 

 discerned,which surrounds the œsophagus 

 near the inouth. If a feeler of any kind 

 project from the head of an animal, whe- 

 ther the antenna of a lobster or the trunk 

 of an éléphant, « it is a brandi of this 

 » nerve which supplies sensibility to the 

 » member and animâtes its muscles. Rut 

 » this is only if it be a simple organ of 

 » feeling, and is not in its office connected 

 » with respiration. » 



From the nerve which cornes off from 

 the anterior ganglion of the leech, and 

 which supplies its mouth, we may trace 

 up through the gradations of animais, a 

 nerve of taste and manducation, until we 

 arrive at the complète distribution of the 

 fifih, or trigeminus in nian. Rere in the 

 higest link, as in the lowest, the nerve is 

 subservient to the same functions. « It is 

 » the nerve of taste and of the salivary 

 » glands ; of the muscles of the face and 

 t< jaws, and of common sensibility. It 

 » cornes off from the base of the brain 

 ») in so peculiar a situation, that it alone 



Réimpression. 



» que du cordon moteur. » Un gan 

 glion se forme sur ce nerf près de son 

 origine, bien que quelques-uns de ses 

 filaments passent outre sans pénétrer 

 dans le ganglion. Avant de sortir du 

 crâne, le nerf se partage en trois 

 grandes branches qui se rendent à la 

 face, aux mâchoires et à la langue. 

 Ses rameaux pénètrent finement dans 

 la peau ainsi que dans tous les mus- 

 cles, « et ils abondent spécialement 

 » aux lèvres » (p. 47-48) (*). 



(*) OF THE TR1GEM1NUS0R F1FTH PAIR, « the 



» nerf of sensation and mastication». 



In ail animais that have a stomach. with 

 palpi or tenlacula to embrace their food, 

 the rudiments of this nerve may be per- 

 ceived; and always in the venues, that 

 part of their nervous system is most easily 

 discerned, which surrounds the œso- 

 phagus near the mouth. If a feeler of any 

 kind project from the head of an animal, 

 whelher the antenna of a lobster or the 

 trunk of an éléphant, « it is by a brandi 

 » of this nerve that it is supplied with 

 » sensibility. Rut if it be not merely a 

 » simple organ of feeling , but in its 

 » office connected with respiration, ano- 

 » ther nerve is added. The trunk of the 

 » éléphant is not a simple feeler; it is a 

 » tube through which it respires, and 

 » therefore it lias a différent nerve supe- 

 » radded, to move it as a hand and to 

 » expand it in the act of inspiration. » 



From the nerve which cornes off fi om 

 the anterior ganglion of the leech, and 

 which supplies its mouth, we may trace 

 up through the gradations of animais a 

 nerve of taste and manducation, until we 

 arrive at the complète distribution of the 

 fifth, or trigeminus in man. Here in the 

 highest link, as in the lowest, the nerve is 

 subservient to the same functions. « It is 

 » the nerve of the muscles of the jaws and 

 » of common sensibility, of taste and of 

 » the salivary glands. It cornes of from 

 » the base of the brain in so peculiar a 

 » situation, that it alone, off ail the nerves 



