OLFACTORY NERVE, 



G71 



The subject has since been again carefTilly investigated by Martin, who upholds 

 the con-ectness of Max Schultze's \-iews.* 





Fig. 486. — Nerves of the Septum Nasi, seen from the right side (from Sappej-, 

 after IlirsclifelJ and Leveille). f 



I, the olfactory bulb ; 1, the olfactory nerves passing through the foramina of the 

 cribriform plate, and descending to be distributed on the septum ; 2, the internal or 

 septal twig of the nasal branch of the ophthalmic nerve ; 3, naso-palatine nerves. 



Fig. 487. — Nerves of the Outer "Wall ^'S- ^^'• 



OF THE Nasal Fossae (from Sappey, 

 after Hirschf eltl' a'rid Leveille). § 



1, network of the brandies of the 

 olfactory nerve, descending upon the region 

 of the superior and middle turbinated 

 bones ; 2, external twig of the ethmoidal 

 branch of the nasal nerve ; 3, spheno- 

 palatine ganglion ; 4, ramification of the 

 anterior palatine nerves ; 5, posterior, 

 and 6, middle divisions of the palatine 

 nerves ; 7, branch to the region of the 

 inferior turbinated bone ; 8, branch to 

 the region of the superior and middle 

 turbinated bones ; 9, naso-palatine branch 

 to the septum cut short. 



Olfactory Nerve. — The fila- 

 ments of this nerve, lodged at 

 first in grooves on the surface of 

 the bone, enter obliquely the sub- 

 stance of the Schneiderian mem- 

 brane, and pass to their distribution between its raucous and fibrous 

 layers. The nerves of the septum (fig. 486) are rather larger than 

 those of the outer wall of the nasal fossfe ; they extend over the upper 

 third of the septum, and as they descend become very indistinct. The 

 nerves of the outer wall are divided into two groups— the posterior 



* Exner, Wiener Sitzungsberichte, 1870 and 1872 ; H. Newell Martin, "Journal of 

 Anat. and Physiol.," vol. viii. 



