CONTENTS 



§ 8. The respiration of plants .... 



§ 9. The geotropism of stems .... 



§ 10. The various forms of foliage-bearing stems 



§ 11. The forms and functions of stems not cnnnectPfl witli 

 support of foliage ...... 



§ 12. The monstrosities of stems and leaves 



§ 1.3. The economics, and treatment in cultivation, of stems 



V. The Morphology and Phtsiologt of Roots 

 The distinctive features of roots .... 



The structure of roots 



The cellular anatomy of roots ..... 

 The absorption of water, and other functions of roots 



Osmotic processes in plants 



The composition and structure of soils 

 The .self-adjustments of roots to prevailing conditions 

 The additional, and substitute, functions of roots 

 The economics, and treatment in cultivation, of roots 

 § 10. Summary of the functions and tissues of plants 



Chaptkr VI. The Morphology and Physiology of Flowers 



§ 1. The distinctive features of flowers .... 



§ 2. The structure of flowers ...... 



§ 3. The accomplishment of fertilization by flowers 



§ 4. The nature and consequences of fertilization . 



§ 5. The methods and meaning of cross-pollination 



§ 6. Methods of asexual reproduction .... 



§ 7. The origin and significance of .sex .... 



§ 8. Heredity, variation, and evolution .... 



§ n. The methods used by man in breeding better plants 



§ 10. Tlie morphology of flowers ..... 



§11. The morphology and ecology of flower clusters 



§ 12. Special forms, abnormalities, and monstrosities of flower 



§ 13. The economics, and treatment in cultivation, of flowers 



Chapter VII. The Morphology and Physiology of Fruits 



§ 1. The distinctive characteristics of fruits 



§ 2. The structure and moi-phology of fruits . 



§ 3. The dis.semination and dispersal of plants 



§ 4. Special forms and monstrosities of fruits . 



§ 5. The nature and cure of plant diseases 



§ 6. The economics and cultivation of fruits . 



