xiv CONTENTS 



Paob 



18. Metabolism of Proteins during Seed Germination. Processes of 

 Decomposition and Synthesis. The Significance of Ammonium 

 Salts and Asparagme 72 



CHAPTER III 

 Respiration of Plants 



19. The Respiratory Process 82 



20. Methods of Studying Respiration. Intensity of Respiration 84 



21. Substances Consumed during Respiration. The Respiratory 

 Quotient 89 



22. The Dependence of the Respiratory Intensity on the Conditions 



of the Surrounding Medium 91 



23. Anaerobic Respiration and Alcoholic Fermentation 96 



24. Relation between Fermentation and Respiration. Theories of 

 Respiration of Palladin and Warburg 100 



25. Energy Relations of Respiration. Oxidation-reduction Potential . 105 



CHAPTER IV 

 Growth of Plants 



26. Growth of Plants. Germination of Seeds 112 



27. Growth of Separate Cells and the Processes Involved. Stages 

 of Growth: Embryonic Development, Expansion, and Internal 

 Differentiation ^ ^^ 



28. Methods of Measuring Growth. General Laws of Growth and 

 Their Mathematical Formulation 118 



29. Growth Hormones; Auxin, Its Action and Chemical Composition. 123 



30. Influence of Temperature on Growth. Cardinal Points. Ther- 

 mophilic Organisms 128 



31. Influence of Light on Growth. Daily Periodicity of Growth. 

 Formative Influence of Light 131 



32. Influence on Growth of the Degree of Saturation of the Plant 

 with Water 135 



33. Chemical Stimulants for Growth. Toxic Action of Pure Neutral 

 Salts. Balanced Solutions 139 



34. Influence of Gravity upon the Position of Growing Organs. 

 Geotropism 1'*** 



35. Influence of Light upon the Direction of the Growth of Organs. 



Phototropism 1^^ 



36. Chemo-, Hydro-, and Thermotropism 155 



CHAPTER V 

 Carbon Assimilation 



37. General Concept of Photosynthesis and Its products 160 



38. Methods of Detection and Study of Photosynthesis 164 



39 Plastid Pigments. Chlorophyll, Its Chemical Composition, 



1 A*? 



Structure, and Properties 



