CONTENTS 



CHAPTER I 



INTRODUCTION 



PAGE 



i. General i 



2. Aim of physiology 8 



3. Nature of irritability 10 



4. Causal relationship of growth and development 23 



5. Variation and heredity 3 1 



CHAPTER II 



PHYSIOLOGICAL MORPHOLOGY 



6. Structure and function of plant organs 37 



7. of protoplasm 41 



8. Origin of plasmatic organs 46 



9. Relationship between nucleus and cytoplasm 50 



10. Uni- and multi-nucleate cells 58 



11. Chemistry of the protoplast 61 



CHAPTER III 



IMBIBITION AND MOLECULAR STRUCTURE 



12. Force of imbibition and swelling of organized bodies 70 



13. Hypotheses of molecular structure 76 



14. Changes of molecular structure due to swelling 83 



CHAPTER IV 

 MECHANISM OF ABSORPTION AND TRANSLOCATION 



15. General 86 



1 6. Diosmotic properties of the cell 9 



17. Absorption and excretion 101 



1 8. Plasmatic membranes 107 



19. Ingestion and excretion of solid bodies ill 



20. Translocation from cell to cell 112 



21. Diosmotic properties of cuticle and cork . ...... 116 



22. Quantitative selective power 119 



