NERVE STIMULATION 19 



b. Place the rest of the leg in the hot water for two 

 or three minutes. Observe that the muscles become con- 

 tracted and opaque, i.e. rigor mortis sets in. Remove 

 excess of water with a cloth, cut off the remaining thigh 

 muscles, and press the cut surface on the litmus paper; 

 the reaction will be distinctly acid. 



c. Stimulate the nerve of the leg used in 6 for five 

 minutes continuously, and for five minutes more at 

 short intervals. Remove excess of fluid from the sur- 

 face of the thigh muscles, cut them across and test their 

 reaction, it will be faintly acid. 



2-2 



