viii RESPONSE IN THE LIVING AND NON-LIVING 



These investigations were commenced in India, 

 and I take this opportunity to express my grateful 

 acknowledgments to the Managers of the Eoyal 

 Institution, for the facilities offered me to complete 

 them at the Davy-Faraday Laboratory. 



J. C. BOSE. 



DAVY-FARADAY LABORATORY, ROYAL INSTITUTION, 

 LONDON: May 1902. 



