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EXPERIMENTAL PHARMACOLOGY 



pancreatic duct (Figs. 244 and 245). Stimulate the vagus 

 nerve with a series of single shocks repeated at frequent 

 intervals (does this stop the heart!) and see if you can get 

 a flow of pancreatic juice. Keep this up for five or ten 

 minutes if necessary. 



Three injecting burettes should be used, one in each 

 femoral vein and one in the left external jugular vein. 



Fig. 244. A dissection showing the position and relations of the pancreatic ducts 

 in a dog. /, intestine; O, omentum; M, mesentery; S, stomach; P, pancreas (tail); BD, 

 position of bile duct (dotted, beneath the pancreas) ; LD, large duct, and SD, small duct 

 of the pancreas. The pancreas is partly cut away to show the position of the ducts. 



This latter one contains adrenaline, the other two contain 

 atropine (one cubic centimeter equals one milligram) and 

 pilocarpine (one cubic centimeter equals one milligram). 

 Observe the size of the pupils carefully. Then adjust all 

 writing points and take a short normal record. Inject one 

 cubic centimeter of pilocarpine solution. What is the ac- 



