iqiq] 



woo— A MARA NTH US 



331 



non-reducing sugars fluctuate throughout the season. This is 

 just the reverse of what is found in the stems. In the leaves the 



12 13 



Fig. 9. — Reciprocal fluctuation of carbohydrate and nitrogen in roots (cf. figs. 3 

 and 6). 



fluctuation of the reducing and non-reducing sugars is in the oppo- 

 site direction; when the reducing sugars are high, the non-reducing 



