Viii CONTENTK 



CHAPTER IX 



PAGE 



Seed Plants (Spermatophyta) (Gymnosperm^) . . 158 



CHAPTER X 

 AngiosperMjE (Monocotyledons) 177 



CHAPTER XI 

 Dicotyledons . . . ... 199 



CHAPTER XII 

 Geological and Geographical Distribution . 220 



CHAPTER XIII 

 Animals and Plants 242 



CHAPTER XIV 

 Influence of Environment 261 



CHAPTER XV 



Summary and Coxclusion . . . . . 284 



