CONTENTS. 



PART I. GENERAL ANATOMY AND PHYSIOLOGY. 



CHAPTER I . 

 PROTOPLASM. 



FAOB 



General Characters Chemical Composition Consistence Power 

 of Imbibing Water Vacuoles Physical Activity Naked 

 Protoplasm Protoplasm Enclosed in Cell Walls 1 



CHAPTER II. 

 THE PLANT-CELL. 



General Statement Ectoplasm and Endoplasm Bands and Strings 

 of Protoplasm Nucleus Size of Cells Forms of Cells The 

 Cell the Unit in Plants 15 



CHAPTER III. 



THE CELL-WALL. 



Composition Growth in Surface Growth in Thickness The 

 Markings on Cell Walls Theories as to the Mode of Thick- 

 ening Stratification of the Cell Wall Formation of Chem- 

 ically Different Layers The Formation of Mucilage Incom- 

 bustible Substances in the Wall . . 21 



CHAPTER IV. 

 THE FORMATION OP NEW CELLS. 



Cell-Formation by Division : (ft) Fission; (6) Internal Cell-Forum- 



tion Cell-Formation by Union Examples 36 



