14 



ART. 4. — M. SHIGA : ON THE EFFECT 



III. Removal of leaves. 



(1) Pisum arvense. 



On the 29th October, the full grown leaves of the second 

 series were all removed for the first time, and the removal was 

 repeated afterwards. 



The flowering of the first series was earlier than that of the 

 second series. Continual removal of leaves prevented a too profuse 

 growth of vegetative parts and even prevented the production of 

 flowers. 



Table IX. 



Water-culture of Pisum arvense. 



Knop's solution was used. 



22 October. Transferred to water-culture. 



31 March. End of the experiment. 



