/4 



Daij^ 



21 



ZG 



JS 



Fig. 2.- — Growth curves for the following plants — 

 6-A and 6-B Coleus (large leaf type). 

 7-A and 7-B Coleus (small leaf type). 

 8-A and 8-B Marguerites or Paris Daisies. 

 9-A and g-B Geraniums (S. A. Nutt). 



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