TABLE OF CONTENTS. 



LECTURE I. 



PAGE 



INTRODUCTORY . . . i u 



LECTURE II. 

 THE STRUCTURE AND PROPERTIES OF THE PLANT-CELL 1230 



The Cell- wall, 14 



The Protoplasm, 23 



The Nucleus, 26 



The Vacuole and the Cell-Sap, 28 



LECTURE III. 



THE STRUCTURE AND PROPERTIES OF THE PLANT-CELL, 



(continued) 31 45 



The Molecular Structure of Organised Bodies, 31 



The Swelling-up of Organised Bodies (Imbibition), 37 

 The Osmotic Properties of the Cell, 39 



LECTURE IV. 

 ABSORPTION 46 68 



Absorption of Water and Substances in Solution, 46 



LECTURE V. 



ABSORPTION (continued) 6988 



Absorption of Gases, 69 



Absorption of Oxygen, 75 



,, Carbon Dioxide, 81 



,, Nitrogen, 84 



,, ,, Ammonia, 86 



