TABLE OF CONTENTS. 



PART I. GROWTH AND WORK OF PLANTS. 



CHAPTER I. 



PAGE 

 THE PLANT, ITS PARTS AND ORGANIZATION i 



CHAPTER II. 



PARTS OF SEEDS AND HOW SEEDS GERMINATE 6 



The bean 6 



The castor bean 9 



The squash or pumpkin 1 1 



Corn seedlings 12 



The pine 15 



Conclusions 16 



CHAPTER III. 



NATURE OF FOOD STORED IN SEEDS AND OTHER PLANT PARTS . . . 18 



CHAPTER IV. 



GROWTH OF ROOT AND STEM 25 



CHAPTER V. 



ROOTS, THEIR KINDS, MECHANICAL WORK AND STRUCTURE .... 31 



Root system 3 1 



Kinds of roots 33 



CHAPTER VI. 



WORK OF ROOTS IN ABSORPTION OF WATER AND FOOD FROM THE SOIL . 39 



ix 



