BARIUM, ADRENALINE, PILOCARPINE 



281 



average sized dogs). When the effects are well marked 

 inject one-half cubic centimeter of adrenaline. What pilo- 

 carpine reactions does this counteract? Your records 

 should show marked results. 



Fig. 248. Tracing showing the comparative extent of duration of the action of barium 

 and of adrenaline on intestinal contractions and on the blood-pressure in a dog. 



Allow the animal to return to normal and then repeat 

 the pilocarpine and adrenaline injections. 



Allow the animal to recover for a few minutes and mean- 

 while empty the pilocarpine out of the burette and replace 



