Noguchi 



Plate 25 



i. : 



-~-^- - *r*^r...-= 



<* ^ 



f- ^ 







. 



D 



. 



A 



V 



\ 



B 



Nerve Fibers of Rana catesbiana. 



A. Normal (low power). B. Normal (high power). 



C. Acted on by Cobra venom for 2 hours (low power). D. Acted on by Cobra 

 venom for 2 hours (high power). 

 (Photomicrographs.) 



