XIV 



CONTENTS 



CHAPTER PAGE 



XXIV. Dispersal of Seeds 166 



XXV. Germination 171 



XXVI. Phenogams and Cryptogams 179 



XXVII. Studies in Cryptogams 185 



PART II 



The Plant in Its Relation to Environment 

 and to Man 



XXVIII. Where Plants Grow 205 



XXIX. Contention with Physical Environment .... 212 



XXX. Competition with Fellows 218 



XXXI. Plant Societies 228 



XXXII. Variation and Its Results 236 



XXXIII. Weeds 241 



XXXIV. Crops 249 



XXXV. The Forest 256 



PART III 

 Histology, or the Minute Structure of Plants 



XXXVI. The Cell 263 



XXXVII. Contents and Products of Cells 270 



XXXVIII. Tissues 278 



XXXIX. Structure of Stems and Roots 285 



XL. Structure of Leaves . . 297 



PART rv 

 The Kinds of Plants (p. 307) 



