THE NERVOUS SYSTEM OF AMPHIBIA 



317 



R.L.LVII 





w I 



R.L.LVII 





R.VIII- 





lUMVcs as tliov enter tlie l)rain. Figures 25 and 26 show the root fibers of the 

 lateral line component {R.L.L.VII, a and 6) and figures 24 and 23 show the ascend- 

 ing divisions of these root fibers {L.L.VII,Asc.). P'igure 25 shows also the root 

 fibers of the visceral sensory component (R. VII. vis.) of the facial nerve approach- 

 ing the brain amid cells of the root mass, and figure 27 shows this component 

 entering the brain. Immediately ventrally of this is the root of the eighth nerve. 

 In the next section caiidad, figure 28, descending divisions of the lateral line 

 root fibers (L.L.VIIJJcs.) appear, but nothing can be seen of the other com- 

 ponents of this complex. The entire cephalocaudal range through which the 

 lateral line component can be recognized in this series within the brain is only 

 60 ju. 



