282 The Carbo/ii/drates of f/ic Maiujuld Lmf 



The total fluctuation during the 24 hours is small — ranging only 

 from 0-37 to 0-52 per cent. 



Series 11. Intermediate Stage of Grouih. 

 Table II. 

 Mangold Leaves, September lOth-lltli, 1912. 

 Sept. 10th. Sun rises 5.28 a.m. Sept. lltli. Sun rises 5.30 a.m. 



* Calculated on total vacuum-dried matter of the leaf. 

 t After allowing for the pentoses i^resent. 



Changes during the 24 hours. 



The results are shown graphically in Fig. 5. 



Maltose and Starch. These are absent throughout tlit^ wliole 21 

 hours. 



Saccharose and Hexoses. As in Series 1 the results of the inversion 

 with citric acid are slightly higher tlian those obtained with invertase. 

 The curves, both of saccharose and reducing sugars, are far more com- 

 plicated than those of the first picking (August 26th). Both curves 



