iinpulaes in plants, and I have very recently been able to 

 establish, chat the nervous impulse generated in the animal 

 nerve by stimulus is not single, but double. 



The study of the responsive phenomena in plants must 

 thus form an integral part of physiological investigation 

 into various problems relating to the irritability of all living 

 tissues, and without such study the investigation must in 

 future remain incomplete. 



October 1919, J. C. BOSE. 



