BDELLOSTOMA DOMBEYI, LAC. 161 



I think this swimming experiment gives very satisfactory 

 evidence to the effect that the semi-circular canals in man do 

 not function as organs of dynamical equilibration. At the 

 opposite end of the scale Bdellostoma is certainly not 

 dependent upon its ear for the equilibrium of its body. I may 

 say in conclusion that I think Professor Evvald has made a 

 great discovery in showing how intimately the auditory nerve 

 is related to the musculature of the body and in proving that 

 some of the complicated phenomena which follow section of 

 this nerve and of its branches are fully accounted for by the 

 fact of the lessened muscular tonicity of the injured side and 

 not on the ground that these phenomena indicate the special 

 functions of the several parts of the ear. 



