CONTENTS 



IX 



CHAPTER XX 

 TYPES OF CRYPTOGAMS ; THALLOPHYTES . 



'CHAPTER XXI 

 TYPES OF CRYPTOGAMS; BRYOPHYTES 



CHAPTER XXII 

 TYPES OF CRYPTOGAMS; PTERIDOPHYTES . 



CHAPTER XXIII 

 THE EVOLUTIONARY HISTORY OF PLANTS . 



PAGES 

 . 235-276 



. 277-285 



. 286-297 



. 298-305 



PART II 



ECOLOGY, OB RELATIONS OP PLANTS TO THE WORLD 

 ABOUT THEM 



CHAPTER XXIV 

 PLANT SOCIETIES 307-323 



CHAPTER XXV 

 BOTANICAL GEOGRAPHY . . . . . . . . 324-335 



CHAPTER XXVI 

 PARASITES, ENSLAVED PLANTS, MESSMATES, CARNIVOROUS PLANTS 336-344 



CHAPTER XXVII 

 How PLANTS PROTECT THEMSELVES FROM ANIMALS . . 345-352 



