288 The Carbohi/dratcs of the M<(U(/ol(/ Leaf 



of the reducing sugars, whilst from 3 to 5 p.m. cane sugar falls and the 

 hexoses increase in amount. At sunset, as in the August picking, a 

 rapid rise of both cane sugar and reducing sugars occurs, the cane sugar 

 reaching its maximum first at 7 p.m. and then apparently being converted 



Table III. Mangold Leaves, Octolx'i- ]lth-r2th, 1912. 



Oct. lull. Sun rises G.19 a.m. Oct. 12th. Sun rises 6.21 a.m. 



Sun sets 5.15 p.m. Sun sets 5.13 p.m. 



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

 t Allowance has boc^n made for the pentoses present. 



into he.xoses ; this is shown by the rise of hexoses between 7 and 9 p.m., 

 whilst the saccharose is falling. From 9 p.m. to 11 p.m. both sugars 

 are falling, but between 11 p.m. and 3 a.m. there is again a rapid rise in 

 the sugars, exactly as in the September picking, until the night maxima, 

 B and B', are reached, at 3 a.m., tiiat is 3 hours before sunrise, a position 



