TABLE OF CONTENTS. 



PART I. PHYSIOLOGY. 



CHAPTER I. 



PAGB / 

 PROTOPLASM i 



CHAPTER II. 

 ABSORPTION, DIFFUSION, OSMOSE. 13 * 



CHAPTER III. 

 How PLANTS OBTAIN WATER 22 



CHAPTER IV. 

 TRANSPIRATION, OR THE Loss OF WATER BY PLANTS 35 



CHAPTER V. 

 PATH OF MOVEMENT OF WATER IN PLANTS 48 



CHAPTER VI. 

 MECHANICAL USES OF WATER 56 



CHAPTER VII. 



STARCH AND SUGAR FORMATION 60 



1. The Gases Concerned 60 



2. Where Starch is Formed 64 y 



3. Chlorophyll and the Formation of Starch 67 



CHAPTER VIII. 



STARCH AND SUGAR CONCLUDED; ANALYSIS OF PLANT SUBSTANCE 73 



1. Translocation of Starch 73 



2. Sugar, and Digestion of Starch 75 



3. Rough Analysis of Plant Substance 79 



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