viii CONTENTS. 



LECTURE VI. 



PAGE 



THE MOVEMENT OF WATER IN PLANTS .... 89102 



LECTURE VII. 

 TRANSPIRATION . 103120 



LECTURE VIII. 

 THE FOOD OF PLANTS 121138 



LECTURE IX. 



THE METABOLISM OF PLANTS . . . . . I39 _ I 6 I 



i. The Formation of Non-nitrogenous Organic Sub- 



stance, MO 



i. The Formation of Nitrogenous Organic Substance, 148 



3. The Function of Chlorophyll, I5 , 



4. The Action of Light, x - -, 



LECTURE X. 

 METABOLISM (continued] 162186 



5. The Distribution of Organic Substance in the 



Pla t, , 6a 



LECTURE XI. 

 METABOLISM (continued} ... o __ 



6. The Metabolic Processes, ' , 87 ' 



LECTURE XII. 

 METABOLISM (continued) ... 



7- The Products of Metabolism, ' 2l6 ~ 25 



LECTURE XIII. 

 METABOLISM (continued} 



8. The Supply of Energy, ' 2 5 J 287 



Light, 



III 



LECTURE XIV. 

 METABOLISM (continued) 



9. The Expenditure of Energy, ' 288 ~ 33 



1. The Accumulation of Energy, 



2. The Dissipation of Energy 



290 



