- 135 - NERVOUS SYSTEM. 



38. Stimulation of a motor nerve. In a muscle-nerve preparation (see Part I, 

 No. 14) stimulation of the sciatic nerve with a galvanic forceps causes the gastrocnemiug 

 muscle to contract. 



39. Functions of the various parts of the central nervous system. Demons- 

 tration of the reflexes which remain when the following parts of the central, nervous 

 system of a toad are successively removed : (a) fore-brain, (6) cerebellum (c) spinal 

 cord. 



