304 



LiFfi MOVEMENTS IN PLANTS 



to the growing region, there was an enhancement to one 

 and half times the normal rate (Fig. 108). 



TABLE XXVIII. — EFFECT OF ANODE AND CATHODE OK GROWTH 



(^Kyuoor). 



The effects given above take place under the action 

 of a feeble current. Strong current on the other hand 

 induces a retardation or an arrest of growth. 



I have in the above experiments demonstrated -the 

 normal effect of anode in inducing expansion and accelera- 

 tion of rate of growth ; the cathode was shown to induce 

 contraction and retardation of growth. Unilateral applica- 

 tion of anode and cathode thus induces appropriate curva- 

 tures in pulvinated and in growing organs. 



SUMMARY. 



The- effects of an electric current on growth is modi- 

 fied by the direction of currant. A feeble anodic current 

 enhances the rate of growth ; a cathodic current on the 

 other hand induces a retardation of the rate. Strong cur- 

 rent, both anodic and cathodic, induces a retardation. 



