Noguchi Plate 24 

Cc 
A. Medulla oblongata of Rana catesbiana (4 hours in physiol. salt sol.). 500. 
B. The same, kept 2 hours in Cobra venom solution. X 500. 
C. The same, kept 4 hours in Moccasin venom solution. X 500. 
(Photomicrographs.) 
