48 



OLOF LAESELL 



on approaching the cribriform plate into three strands, each of 

 which unites with one of the bundles of the vomeronasal nerve. 

 No differentiation between the terminal is and the vomeronasal 

 nerve could be seen after the two had joined. Since they are 

 separate in the cat, rabbit, horse, and human, there can be little 

 doubt that differential staining methods would show the two as 

 distinct in the septal region of the beef also. Attention may be 

 directed at this point to the two gangha which are visible on the 



Fig. 35 Longitudinal section of two nerve strands accompanying anterior 

 cerebral artery of the beef, showing myelinated fibers. Formalin fixation, iron- 

 hematoxylin stain. Sections 10 m- X 450. 



Fig. 36 Transverse section of relatively large nerve strand parallel to anterior 

 cerebral artery of beef, showing myelinated fibers. Formalin fixation, iron-hae- 

 matoxylin stain. Sections 10 n. X 450. 



main central bundle of the nerve in the fetus and to the two roots 

 at its central end. These roots appeared to enter the brain 

 substance near the fissura prima. 



Histological. The composition of the main nerve bundle in 

 the adult, and of the principal strands which run parallel with 

 the several branches of the anterior cerebral artery, was deter- 

 mined by the study of sections. As shown in figure 36, which 

 represents a cross-section of one of the larger strands on the 

 internal frontal branch of the anterior artery cerebral, sixteen 



