Chap. II. DEOPS OF WATER. 37 



vapours, and oxygen (after the plant has been for some 

 time excluded from its action), all induce inflection, 

 and this likewise results from an induced galvanic 

 current.* 



* My son Francis, guided by the secondary coil of a Du Bois 



the observations of Dr. Burdon inductive apparatus are inserted, 



Sanderson on Dionsea, finds that the tentacles curve inwards in the 



if two needles are inserted into course of a few minutes. My son 



the blade of a leaf of Drosera, the hopes soon to publish an account 



tentacles do not move ; but that if of his observations, 

 similar needles in connection with 



