EFFECTS OF ANODE AND KATHODE 243 



of the current. Effects in every way parallel are observed 

 in experimenting with petiole-pulvinus of Biophytum. 



These characteristic modifications are easily traceable in 

 Biophytum to the contrasted effects of anode and kathode, 

 and of make and break. Excitability is enhanced by the 

 make of kathode and break of anode. It is depressed by 

 the make of anode and break of kathode. 



r 2 



