190o.] Action of Choline, Neurine, Muscarine, and Betaine. 335 



Exp. VII. Muscarine Nitrate. 



First Second 



nerve. nerve. 



Normal, after 3J hours in saline and a 



new transverse section .................. -11 18 



After 3 hours in muscarine and new trans- 



verse section ................................. 



After 12 hours in saline and new trans- 



verse section ................................. 6 6 



Exp. VIII (fig. 4). Muscarine Hydrochloride. 2 per cent, in saline. 



Second nerve. 



, - * -- ^ 



Current Neg. 

 of injury. var. 



First nerve. 



Current Neg. 

 of injury. var. 

 After soaking in saline for 2 hours 



and a new transverse section ... +66 - 12 

 After soaking in muscarine solution 



for 2 hours and a new transverse 



section +55 



After 10 hours in saline and new 



transverse section off + -22 



After 8 hours in muscarine and new 



transverse section +80 



After 4 hours in saline 



After 16 hours in saline off + -23 



After 1 2 hours in muscarine 



After 12 hours in saline -16 



After interpolar crush 



off + 



+ 66 



off + 



+ 60 



off + 

 



-12 



-19 









 -21 





 -12 







FIG. 4. 



002^ 



OO2- 

 001 



eohours. 



