NERVUS TERMINALIS IN REPTILE AND MAMMAL 117 



Fig. 7 Human embryo of about 15 mm. (Huber collection xxxiii). Sagittal 

 section through the root and ganglion of the nervus terminalis. Peripherally 

 the nerve is lost in the olfactory bundles, but its ganglion is distinct and the 

 root enters the brain in the characteristic position. 



Fig. 8 Human embryo of 47 mm. (Huber collection ixl). A projection 

 upon one plane of the course of the nervus terminalis from its root to the point 

 where it mingles with the olfactory bundles. The area coarsely stippled indicates 

 the position occupied by the mass of neurilemma cells among the root bundles of 

 the olfactory nerve. The nervus terminalis runs over the medial surface of this 

 mass and joins olfactory bundles running in the same general direction. Only 

 a few olfactory fibers are sketched. 



