CONTENTS 



SECTION I 



PAOE 



The Food of the Plant 1 



CHAPTER I 



I. The Composition of the Soil . 1 



II. The Absorption of Food from the Soil 2 



CHAPTER II 



I. The Composition of the Aie .... 32 



II. The Absorption of Food from the Air . 43 



SECTION II 

 The Breathing of the Plant 70 



SECTION III 

 The Growth of the Plant . . . . .81 



INDEX 109 



