ON Drosera rotundifolia 



13 



by acceleration of the growth on the convex side and in the 

 median section, with contraction of the concave side. 



a c a e 



Fig. 6. Side views of a tentacle in the process of bending, X 22. a, the straight 

 tentacle before stimulation; e, the inflected tentacle twenty minutes after stimulation. 



Fig. 7. Side views of the tentacle shown in Fig. 6 in the process of unbending, 

 X 22. a, the fully inflected tentacle; d, the straight tentacle at the end of the 

 reaction. 



