8 Mason — Central Nervous System of Heptiles^ etc. 



4. No difference in structure can be made out in the upper 

 portion of the cord, corresponding with the sexual function 

 in the male. Tiie long-continued and violent tonic spasm of 

 the anterior extremities, must be explained by local hyper- 

 semia influencing the same structures as those which exist in 

 the female. 



5. The relation which is generally believed to exist be- 

 tween the so-called motor-cells and the inferior (anterior) 

 roots, can be demonstrated in the frog more readily than in 

 any other animal. 



