92 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



The diagrams are drawn to scale, and it is interesting and instructive 



[a) Kb) (a) (b) (a) (b) 



Whole plant. Tops only. Roots only. 



Fig. 42 — Average Weights of Turnips in (a) Outer Rows 

 and (b) Inner Rows in Series II. Compared. 



to observe the change in proportion of root to foliage as the plants 

 advance in age. In the first diagram .(fig. 42) the foliage outweighs 



