278 The Carhohydrates of the MunycAd Leaf 



.such as occurs later on, although the pcrcentafie of cane sugar actually 

 found at 12 midnight is distinctly above the straight line drawn to 

 indicate the falling off of the saccharose; a fact which suggests that 

 a slight increase occurs in this sugar, similar in its nature but on a 



Table I. 



August 26th. Sun rises 5.4 a.m. 

 Sim sets 7.0 p.m. 



August 27th. Sun rises 5.5 a.m. 



Sun sets 6.59 p.m. 



* The temperatures given are the temperatures of the air recorded by the shaded 

 automatic-recording instrument near Barn Field, h ft. above the ground. 



•j- These values give the percentage of vacuum-dried solids of the leaf wliicli are 

 soluble in alcohol, the percentage being calculated on the total vacuum-dried matter of 

 the leaf. 



% The reducing sugars are here calculated as invert sut'ar after allowing for the pentoses 

 present. If the separate amounts of dextrose and laevulose are calculated (see p. 318) the 

 sum of the results, as a rule, differs only very slightly from the values given here. The 

 question of the dextrose-laevulose ratio is discussed in a separate paper (see p. 327). 



