CH. Ill] 



LEMNA. 



61 



(P). Four or five weeks (in May) are necessary to give 

 the result. Owing to an accident the figures do not 

 show the strong growth of roots in (*S')^ 



Fig. 12. Exp. 77. (Reduced.) 



f > * * •% m I * 



♦ * t * •• •• y • 



*• > # y 



^ • - ^ w T > •» « ;.• 





Fig. 12. Exp. 77. (Reduced.) 



In both cultures there were originally G plants each with 3 fronds. 

 D. A. 5 



