INORGANIC RESPONSE 99 



results conclusively prove that the responsive electro- 

 motive variation is solely due to the molecular 

 disturbance produced by mechanical vibration in the 

 acted wire. 



A new and theoretically interesting molecular voltaic 

 cell may thus be made, in which the two elements con- 

 sist of the same metal. Molecular disturbance is in this 

 case the main source of energy. A cell once made may 

 be kept in working order for some time by pouring in 

 a little vaseline to prevent evaporation of the liquid. 



It will be shown further, in succeeding chapters, by 

 numerous instances, that any conditions which increase 

 molecular mobility will also increase intensity of response, 

 and conversely that any conditions having the reverse 

 effect will depress response. 



H '2 



