90 



EXPERIMENTAL PHARMACOLOGY 



Loose liaarure, 

 P/sCe on with, forceps^ 

 NOT withfin<ie { 



Lias fare on 

 sympathetic nerve 



Loose Liy. around arferylj 



TJ&C6 077 with forceps, M'/ 



/YOT wtii finders J|g 



Fig. 90. Ligation of the carotid (in two places) and vago-sympathetic nerve. 



Fig. 91. Opening the carotid artery. (The incision should be made nearer to the 

 upper ligature and the scissors should point more toward the heart than the picture 

 indicates.) 



