NERVUS TERMINALIS IN AMIA 83 



CENTRAL RELATIONS OF THE NERVUS TERMINALIS IN AMIA 



Near the olfactory bulbs each olfactory nerve breaks up into 

 a large and variable number of small bundles. In Nissl prepara- 

 tions on one of the ventro-median bundles can be found cells of 

 the same character as those found in the nervus terminalis in the 

 nasal capsule. These cells (fig. 18) increase in numbers as the 

 olfactory bulbs are approached. They are fusiform with the 



clistdl 



Fig. 17. Fibers and cells from nervus terminalis in adult Amia by the Cajal 

 method. Taken from the nasal capsules to show neurofibrils and fibers branching 

 toward the periphery to end near the cells of the nervus terminalis. X 350. 



pointed end generally directed toward the olfactory bulbs (figs. 

 18 and 19), while the opposite end is frequently capped with a 

 cell of the same size and general appearance as the sheath cells. 

 There are a few smaller ganglion cells, as fig. 18 shows. Nearly 

 one hundred ganglion cells of this type were counted intra- 

 cranially along the two olfactory nerves. I use olfactory nerve 

 rather than nervus terminalis in the previous sentence because 



