TABLE OF CONTENTS. xi 



CHAPTER XIV. 



PAGE 



RESPIRATION 116 



CHAPTER XV. 



SOME SPECIAL ASPECTS or NUTRITION OF PLANTS 124 



Sources of plant food 124 



Nitrification . , 126 



Mycorhiza, Symbiosis 130 



Ferments or enzymes ^32 



CHAPTER XVI. 



NUTRITION OF PARASITES AND SAPROPHYTES 134 



Nutrition of parasites 135 



Nutrition of saprophytes 138 



CHAPTER XVII. ' 



THE FLOWER SHOOT 142 



Flower clusters 148 



CHAPTER XVIII. 



FLOWERS, THEIR STRUCTURE AND KINDS 154 



I. Flowers of dicotyledonous plants 154 



The buttercup : . . . .'154 



The evening primrose 157 



Butter and eggs .... . . 161 



The sweet pea ... 163 



The sunflower . 166 



CHAPTER XIX. 



FLOWERS, THEIR STRUCTURE AND KINDS (concluded) ....... 172 



II. Flowers of monocotyledonous plants 172 



The Indian corn 172 



Jack-in-the-Pulpit, Indian turnip 178 



Gladiolus 1 80 



CHAPTER XX. 



METHODS OF POLLINATION 182 



Self-pollination 184 



Cross-pollination by the wind 186 



Cross-pollination by insects 187 



