UPON ELECTRICAL STIMULI GENERALLY 47 



With Professor Bose's conclusion, however, I am 

 thoroughly in agreement. He says : 



" It is thus seen how all parts of the plant are, by means 

 of nerve-conduction, maintained in the most intimate 

 communication with each other. It is, then, by virtue of 

 the existence of such nerves, that the plant constitutes a 

 single organised whole, each of whose parts is affected by 

 every influence that falls upon any other." 



In the experiments I am about to describe continuous 

 current from one or more dry cells employed throughout 

 and in most cases applied to the soil in the pot ; or, in a 

 few instances only, to the soil and the plant or object under 

 observation. 



Upward Driving Force. Long Scarlet Radish. 



A number of seeds of the long scarlet radish were sown 

 in the open ground, in a South border, under normal condi- 

 tions, and an equal number in a 5-inch pot, the soil in which 

 was electrified by means of a dry cell of 1 . 5 volt, positive 

 to bottom, negative to top of soil ; the pot being placed 

 in a cool greenhouse. 



The plants in the open 

 ground showed above soil in 

 seven days ; those in the 

 pot in four days. The former 

 however, made much more 

 vigorous growth. Four days 

 later the pot plants had 

 grown so tall and anaemic 

 that their stems failed to 

 support them ; one having 

 a three inch stem before 

 forming its second leaves. 

 In the accompanying sketch an electrified radish is seen 

 on the left and one of the controls from the open ground 

 on the right. It calls for no remark from me. 



f/^ 22 



