W. A. Davis, A. J. Daisii and G. C. Sawyer 283 



show three well-defined synchronising maxima and minima ; the maxima 

 are at 2 p.m., 6 p.m. and 2 a.m. During the greater part of the day, 

 viz. from sunrise to 4 p.m., the saccharose fluctuates in almost exactly 



10A,M,12Noon 2pm, 4 6 8 10 12N!ght2AM 4 6 



Fig. 5. MauLold leaf, Series II, Sept. 10-11, 1912. 



8 10 



the same way as the temperature. The actual change in the amount 

 of sugar is relatively small, probably owing to the fact that on this 

 particular day there was a lack of direct sunshine, and a cold wind 



