Chap. XI.] GENERAL SUMMARY. 225 



we have reason to suspect that fluid is continually and slow- 

 ly attracted into the outer cells during the act of re-expan- 

 sion, thus increasing their tension.' 



I have now given a brief recapitulation of the chief 

 I)oints observed by me, with respect to the structure, move- 

 ments, constitution, and habits of Drosera rotundifolia; and 

 we see how little has been made out in comparison with what 

 remains unexplained and imknown. 



* [Increase of fluid In the ex- to prevent re-expansion, not to 

 ternal (convex) cells would tend facilitate it. F. D.] 



