CONTENTS. 



CHAPTER I. 



GENERAL IDEAS OF PLANT LIFE. 



Life — Characteristics of Living Matter — Protoplasm — Relation of Life 

 to Surroundings — Protection — Division of Labour — The Cell, the 

 only Unit of Plant Structure — Formation of Cells — Tissues — 

 Chlorophyll — Starch — Shadowing in of the Vegetable Kingdom — 

 Asexual and Sexual Modes of Reproduction — Gradual Evolution 

 and Advantages of the Sexual Mode of Reproduction — Advantages 

 and Disadvantages of Plant Life compared with Animal Life in the 

 Struggle for Existence— Primary Groups of Plants p. i 



CHAPTER II. 

 Subdivision I.— MYCETOZOA. 



Peculiarities presented during the Vegetative Pliase — Characteristic 

 Features of the Reproductive Phase — Affinities — Occurrence/. 80 



CHAPTER in. 



Subdivision II.— THALLOPHYTA. 



Class I. — AlGjE [Seaweeds'). 



Protophyt-a — Primordial Types of Plant Life — Transition from Uni- 

 cellular /"I. ojj ' ~\". ~.-."\ ■'■.•.:. ,:c .*,.L.::.u;.;i;™. _ .riants — 

 Earliest :;"'-:::^; ^ '::; ;; -:,-.-' •■.' ups of 



