X CONTENTS 



CHAPTER XII 

 CELL CONTENTS 



PAGE 



General Classification 142 



Starch 143 



Classification of starch grains 143 



Inulin 144 



Sugars 144 



Alkaloids 146 



Glucosides 146 



Calcium Oxalate 146 



Classification of Crystals. 146 



Tannins '. 148 



Gums '. 148 



Resins 148 



Fats and Fixed Oils 148 



Silica 148 



Calcium Carbonate 148 



Aleurone 150 



CHAPTER XIII 

 ROOT STRUCTURES 



Primary Root Structures 151 



Arrangement of the Tissues 151 



Characters of the Tissues 152 



Epidermis 152 



Hypodermis 154 



Cortical Parenchyma I54 



Endodermis 155 



Phloem Bundles 155 



Xylem Bundles 156 



Pith Parenchyma I57 



Secondary Root Structures 158 



Changes incidental to Formation of Secondary Tissues 158 



Arrangement of the Tissues 158 



Characters of the Tissues ( 158 



Cork 158 



Phellogen 160 



Cortical Parenchyma 160 



