346 The Dextrose-Laevulose Ratio in the Mangold 



The increase in the proportion of apparent dextrose is accompamed by 

 the rise of A from a negative value (— 7-4, invertase figure, Table VIII) 

 to a shghtly positive value (+ 1-8). From noon to 6 p.m., although 

 both dextrose and laevulose appear to be falling, the laevulose relatively 



6 a.m. 12 Noon 6 p.m. 12Niehi 6a.w 



Fig. 5. Mangold stalks, bottoms, Series I, Aug. 2&-27, 1913. 



falls faster than the dextrose ( ^ increases from 6-0 to 9-1 1 and the value 



of A increases to + 41 (Table VIII). Between 6 p.m. and midnight 

 laevulose appears to fall httle, but the dextrose rapidly, at the same 



