NERVUS TERMINALIS IN AMI A 81 



tigroid bodies and the large vesicular nuclei characteristic of 

 functioning nerve cells. 



More than twenty adult nasal capsules were treated by the 

 Golgi method, but there were only two or three doubtful cases 

 of impregnation of the ganglion cells of the nervus terminalis. 

 There were many fibers shown in all of the preparations. The 

 fibers belonging to these cells can be distinguished from those 

 of the olfactory nerve (fila olfactoria) on account of their larger 

 size and the fact that they often branch. Also, the olfactory 

 fibers nearly everywhere show slight varicosities in their course 

 (figs. 8 and 15), and are of lighter color, owing perhaps to 

 their covering of sheath cells. The fibers of the nervus terminalis 

 branch as they rise toward the mid-rib of the nasal epithelium 

 (fig. 15), and were often seen following the course of the arteries 



ia.sal epithelium. rar. term, fibers 



Fig. 15. Golgi preparation of the adult nasal capsule of Amia cut sagittally 

 through the mid-rib. The coarse branching fibers belong to the nervus terminalis, 

 the slender varicose fibers to the olfactory nerve. X 40. 



(fig. 16). In no case were the branches followed into the epi- 

 thelium of the nasal capsule, although careful search was made 

 in both Golgi and intra- vitam methylen blue preparations where 

 the finest end-branches were shown. In many cases they were 

 followed into a reticulum of nerve fibers beneath the basement 

 membrane of the epithelium (fig. 15). This reticulum is located 

 at the point where the arterioles turn laterally along the second- 

 ary folds of the Schneiderian membrane. 



Favorable preparations of the nasal capsules of adult Amia by 

 the Cajal methods show the cells of the nervus terminalis, as 

 well as the fibers related to them. For the reason that they show 



