NERVUS TERMINALIS: MAMMALS 



53 



course of the artery. The nerve strand soon divides into two 

 smaller strands, one of which had been inadvertently cut in 

 separating the hemispheres. The severed portion may be seen 

 on the stump of the artery, which it was ascertained belongs to 

 the right hemisphere of the brain. 



Fig. 40 Mesial view of left hemisphere of full-term mule fetus, showing the 

 nervus terminalis. Slightly enlarged. 



The middle root of the left nerve, as also shown in figures 40 

 and 41, runs toward the perforated area in front of the lamina 

 terminalis. At first it is roughly parallel with the anterior cere- 

 bral artery, then turning upwards, it gives off a small ramus which 

 enters the brain through a perforation in the furrow of the small 

 sulcus (posterior parolfactory) shown in the figure. Another 

 ramus of s-lightly larger size is given off a little further caudad. 

 This, and the caudally continuing main strand, also enter the 



