558 



LIFE MOVEMH;:^TS IN PLANTS 



the other hand, accentuates it. The particular diurnal move- 

 ment was not confined to the palm trees, but was exhibited 

 by all plant-organs subjected to the stimulus of gravity. 



DIURNAL MOVEMENT OF PROCUMBENT STEMS AND OF LEAVES. 



Experiment 210. — In order to demonstrate the continuity of 



the phenomenon of diurnal movement I took various stems 



Fig. 201. ^Diurnal records of leaves of I)a',!ia, fai^ai/a ai.cl Crotoii. 



growing in water or land for my experiment. The plants 

 were laid horizontally, till the stems bent up and assumed 



