INORGANIC RESPONSE 117 



continuously. At the fifth response the two phases, 

 positive and negative, become equal, after that the 

 positive becomes very prominent, the negative being- 

 reduced as a feeble after-vibration. 



It need only be added here that the diphasic varia- 

 tions as exhibited by metals are in every way counter- 

 parts of similar phenomena observed in animal tissues. 



