POISONS ON HEART 



71 



beat will become slower and weaker. Muscarine has a 

 similar effect; the effect of pilocarpine is more variable. 



c. Effect of atropine. Wash off the arecoline with 

 saline solution. Add a couple of drops of 1 p.c. atropine 



Fig. 22. R, rod to which to fix tissue, h, holes for electrodes. 



sulphate. The beat will gradually become quicker and 

 stronger. Stimulate the junction of the sinus and auricle, 

 no slowing will be caused. (If the current is strong, 

 slowing or temporary cessation may be caused by lower- 

 ing the conductivity of the tissue between sinus and 



