X TABLE OF CONTENTS 



Pages. 



2. The Vascular Bundles 246 



3. The Channels for the Ascending and the Descending Rap 246 



4. The Covering or Protective Tissue of Stems .... 248 



C. Stems as Stores for Food in Reserve. . . . . 250 



4.— Tlie Floiver 251 



A. The Parts of the Flower and their Structure . . 252 



B. The Function of the Flower: Pollination . . . 261 



1. Various Provisions for Cross-pollination 261 



2. Pollination by the Agency of Insects 262 



3. and by the AVind 267 



o.— The Fruit and the Seed 267 



A. How Fruits are formed .... .... 267 



B. How Fruits allow their seeds to escape . . . . 270 



Dry dehiscent Fruits 270 



Indehiscent dry Fruits 272 



Fleshy Fruits 27 2 



C. How the Seeds are dispersed 273 



D. How the Seeds produce new plants 275 



Appendix. 



1.— Nomenclature and Classification of Plants . . . . 277 



^. — Distribution of Plants 279 



S. — Bibliograplnj '^^^ 



