CONTENTS 



CHAPTER I 



THE CARBOHYDRATES OF THE ANGIOSPERM LEAF IN 

 RELATION TO PHOTOSYNTHESIS 



PAGES 



The starch of the leaf The diastase of the leaf The sugars of the 

 leaf, with special reference to Tropceolum majus Identification 

 and estimation of leaf sugars Changes in carbohydrate content 

 due to insolation Identification of sugars by means of phenyl- 

 hydrazine and its derivativesThe distribution of sugars and 

 sucroclastic enzymes in the beet The carbohydrates of the snow* 

 drop Diurnal changes in the sugars of the snowdrop The 

 effects of prolonged darkness upon the carbohydrates of leaves 

 Summary of results of researches on the snowdrop The diurnal 

 carbohydrate cycle of the mangold Review of results of re- 

 searches on the mangold Summary of evidence as to the first 

 sugar of photosynthesis - 1 35 



CHAPTER II 



METHODS OF ESTIMATING CARBOHYDRATES IN PLANT 

 EXTRACTS 



Preparation of material for analysis according to Brown and Morris 

 Analyses of Brown and Morris Analytical methods of Parkin 

 The methods of the Rothamsted Experimental Station Esti- 

 mation of maltose Estimation of starch The estimation of 

 reducing sugars by the methods of Benedict and Kendall 

 The limited oxidation of sugars by bromine The determination 

 of moisture and the preparation of anhydrous substances - 36 52 



CHAPTER III 







THE CARBOHYDRATES OF THE THALLOPHYTA AND 

 BRYOPHYTA IN RELATION TO PHOTOSYNTHESIS 



Carbohydrates of the Phaeophycese Carbohydrates of the Rhodo- 

 phycese The primary sugar of photosynthesis in the brown 

 and red algee Occurrence of mannitol Carbohydrates of the 



Bryophyta 5362 



vii 



