ISOLATION OF THE SCIATIC NERVE 



237 



slowed! How is the respiration affected! Now give sev- 

 eral doses of picrotoxine to kill the animal. What is the 

 immediate cause of death so far as you can judge by this 

 experiment ? 



Fig. 219. A dissection showing the position in which an incision should be made for 

 finding the sciatic nerve and placing a ligature around it for stimulation. 



If time permits dissect out both sciatic nerves from the 

 outer and posterior aspect of each hind limb (see Fig. 219). 

 Ligate these nerves loosely and examine them carefully as 



