CONTENTS 



PART I 



GENERAL ACCOUNT 



PAGE 



CHAPTER I. INTRODUCTORY ... 1 



Definition of Anthocyanin Pigments Early Observations of Boyle 

 and Nehemiah Grew Main Lines of Investigation Distribution- 

 Influence of Outside Factors Functions Chemical Nature Connec- 

 tion with Genetics Factors for Anthocyanin Formation in Antirrhinum, 

 Latliyrus and Matthiola Origin of Anthocyanins from Flavones 

 Hypothesis as to Mode of Formation Formation by Oxidation- 

 Formation by Reduction Chemical Interpretation of Mendelian 

 Factors. 



CHAPTER II. THE MORPHOLOGICAL DISTRIBUTION OF ANTHO- 

 CYANINS 17 



Wideness of Distribution in Higher Plants Presence in Lower 

 Plants Distribution in Leaves In Stems and Petioles In Young 

 Leaves and Shoots In Young Leaves in Tropics Autumnal Colora- 

 tion Development in Injured Organs Formation in Winter In 

 Drought In High Alpine Plants In Halophytes In Red-leaved 

 Varieties In Petals, Perianths and Inflorescences In Fruits In 

 Seeds In Roots In Parasites and Saprophytes. 



CHAPTER III. THE HISTOLOGICAL DISTRIBUTION OF ANTHO- 

 CYANINS 29 



Condition of Pigment in Cell-sap In Crystalline and Solid Form 

 in Cells List of Species in which Solid and Crystalline Anthocyanin 

 has been noted Artificial Formation of Anthocyanin Bodies Various 

 Deposits Coloured with Anthocyanin Classification of Distribution 

 of Anthocyanin in Leaf-tissues In Petals Combination of Pigments 

 in Petals Localisation of Anthocyanin in Various Natural Orders. 



