CONTENTS. 



PAOEB 



CHAPTER IV. 



Mekistem. 

 Primary and Secondary Merietems — Cambiums — Dividing Cells 

 of Rudimentary Tissues and their Mode of Growth — 

 Growth of Cell-wall — Cambium, its Origin, Structure, and 

 the Tissues arising from it, 42-56 



CHAPTER V. 

 The Vascular Tissues. 

 The Phloem — The Xylem — The Medullary Rays— Endodermis— 

 Perioyole — Medulla or Pith — Appendix to Chwpter V. 

 — Origin of Primary Wood Elements — Vascular Elements 

 in Bryophyta, . 57-77 



CHAPTER VI. 

 Isolated Tissuks ob Cells iiavini; a .Si'ecieic Function. 

 Sf'cretory Cells of Oil Glands — Resin Canals — Mineral and 

 Organic Matters separating out in Cells — Idioblasts — 

 Laticiferous Vessels and Cells, . 7S-S7 



CHAPTER VII. 

 Cells occdrking amongst the Lower Plants. 

 Cells of Fungi — Cells of Algae, viz. , Spirogyra, Vaucheria, 



Sphi-rella, Mdosira, ... . . 88-99 



CHAPTER VIII. 

 Cell-division. 

 Amitotic Cell-division — Mitotic Nuclear Division, with Division 

 of the Cell— The Structure of the Quiescent Nucleus — 

 Mitosis, its Details and Probable Mechanism, . 100-116 



CHAPTER IX. 

 Cells having the Function of Reproducing the Species. 

 General Considerations — Reproduction in Angiosperms — The 

 Microspore, its Origin and Maturation — The Macrospore, 

 its Origin and Maturation— Fertilisation and Embryo- 

 formation— Origin of the Endosperm— Reproduction in 

 Gymnosperms — Reproduction in Pteridophyta (Homo- 

 sporous and Heterosporous) — Reproduction in Bryophyta, 

 Fungi, and Algie — Homology and Table of Homologies, . 117-155 



