CONTENTS. 



PAKT I. GEJfEllAl. ANATOMY AXD PHYSIOLOGY.. 



CHAPTER I. 

 Protoplasm. 



PAGE 



General Cliaracters — Chemical Composition — Consfsfence — Power 

 of Imbibing Water — Vacuoles — Pliysical 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 Fokmation of New Cells. 



Cell-Formation by Division : (a) Fission ; (J) Internal Cell-Forma- 

 tion — Cell-Forination by Union — Examples. : : .'. 3(v 



