XIV TABLE OF CONTENTS 



CHAPTER XXX. 



PAGE 



LIVERWORTS 304 



Thallose liverworts 306 



The foliose liverworts 311 



Horned liverworts 313 



Comparative review of the liverworts 314 



Alternation of generations 315 



CHAPTER XXXI. 



MOSSES 316 



Alternation of generations 324 



Comparative review of the mosses 325 



CHAPTER XXXII. 



FERNS 327 



Some of the common ferns 329 



Life history of ferns 334 



Dimorphism in ferns 338 



Comparative review of the ferns 341 



CHAPTER XXXIII. 



OTHER FERN-LIKE PLANTS . 343 



The horsetails 343 



The club mosses 346 



The quillworts 350 



Comparative review of the fern plants . . . 351 



CHAPTER XXXIV. 



GYMNOSPERMS 357 



The life history of the pine 360 



Other Gymnosperms . 366 



CHAPTER XXXV. 



ANGIOSPERMS 375 



