CONTENTS 



CHAPTER PAGE 



Preface v 



I. The Field of Plant Physiology i 



II. Properties of Solutions 7 



III. Interfacial Phenomena 23 



IV. Colloidal Systems 32 



V. The Properties of Sols and Gels 39 



VI. Plant Cells 60 



VII. Diffusion 83 



VIII. Osmosis and Osmotic Pressure 93 



IX. Imbibition 107 



X. Permeability 117 



XL The Osmotic Quantities of Plant Cells 134 



XII. The Loss of Water from Plants 156 



XIIL The Stomatal Mechanism 1 74 



XIV. Factors Affecting Transpiration 192 



XV. The Movement of Water through the Plant .... 215 



XVI. Soils and Soil Water Relations 246 



XVII. Absorption of Water 265 



XVIII. The Internal Water Relations of Plants 287 



XIX. The Chlorophylls and the Carotinoids 305 



XX. Photosynthesis 319 



XXL Factors Affecting Photosynthesis 337 



XXII. Carbohydrate Metabolism 367 



XXIII. Fat Metabolism 390 



XXIV. Absorption of Mineral Salts 401 



XXV. Utilization of Mineral Salts 415 



XXVI. Nitrogen Metabolism 437 



XXVII. Digestion 461 



XXVIII. Translocation of Solutes 481 



XXIX. Respiration 508 



XXX. Anaerobic Respiration and the Mechanism of Res- 

 piration 531 



XXXI. Growth, Assimilation, and Accumulation 549 



ix 



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