REACTIONS OF NECTURUS TO STIMULI THROUGH SKIN 95 



of the body. The gills and head were less sensitive. All regions 

 responded when stimulated with a ten per cent solution and 

 all regions except the pelvic and back were sensitive to ten 

 per cent. Necturus is less sensitive to alcohol than to any- 

 other chemical used, as indicated by the stronger solution neces- 

 sary to induce reaction. 



TABLE XX 



Reactions to 50% Alcohol 



TABLE XXI 

 Reactions to 10% Alcohol 



