PKEFACE 



I HAVE in the present work put in a connected and a 

 more complete form results, some of which have been 

 published in the following Papers : 



' De la Generality des Phenomenes Moleculaires produits 

 par 1'Electricite sur la matiere Inorganique et sur la 

 matiere Vivante.' (Travaux du Congres International 

 de Physique. Paris, 1900.) 



' On the Similarity of Effect of Electrical Stimulus on In- 

 organic and Living Substances.' (Report, Bradford 

 Meeting British Association, 1900. Electrician.) 



'Kesponse of Inorganic Matter to Stimulus.' (Friday 

 Evening Discourse, Koyal Institution, May 1901.) 



4 On Electric Eesponse of Inorganic Substances. Preliminary 

 Notice.' (Koyal Society, June 1901.) 



' On Electric Eesponse of Ordinary Plants under Me- 

 chanical Stimulus.' (Journal Linnean Society, 1902.) 



1 Sur la Reporise Electrique dans les Metaux, les Tissus 

 Animaux et Vegetaux.' (Societe de Physique, Paris, 

 1902.) 



' On the Electro-Motive Wave accompanying Mechanical 

 Disturbance in Metals in contact with Electrolyte.' 

 (Proceedings Royal Society, vol. 70.) 



* On the Strain Theory of Vision and of Photographic Action.' 

 (Journal Royal Photographic Society, vol. xxvi.) 



