XU CONTENTS. 



Chapter II. 



Page. 



Constituents of Plants — Food of Plants — Absorption of 

 Food — Ascent of the Sap — Gases in the Plant — 

 Practical Exercises 225-237 



Chapter III. 

 Assimilation of Food — Distribution and Storage of Re- 

 serve Materials — Destructive Metabolism — Influ- 

 ence of Temperature on the Life of the Plant — 

 Influence of Light on the Life of the Plant — Para- 

 sites and Saprophytes — Practical Exercises 237-247 



Chapter IV. 



Movements of Plants — Locomotion — Movements not 

 Locomotive — Geotropism — Heliotropism — Hydro- 

 tropism — Circumnutation — Nyctitropic Move- 

 ments — Irritability — Reproduction — Practical Ex- 

 ercises 247-263 



PART IV.— VEGETABLE TAXONOMY. 

 Chapter I. 



Value of Comparative Study — Classification and Nam- 

 ing of Plants — Principal Groups of Plants 264-271 



Chapter II. 

 the thallophyta. 

 Characteristics of the Series — Subdivisions of the Series 



— Synoptical View 271-273 



Chapter III. 

 the thallophyta (continued). 

 Class I. — The Myxomycetes or Slime- Moulds. 274-275 



Chapter IV. 



the thallophyta (continued). 



Class II — The Schizophyta or Fission- Plants. 



Schizomycetes — Cyanophyceae — Chroococcaceae — Nos- 



tocaceae 276-280 



