﻿VIII CONTENTS. 



Chapter X. — Fern Ancestry and Angiosperm Analogies 239-246 



The fern cycad relation summarized 239-241 



Sporophyte reduction correlated with elimination of separate pro- 



thallial stages and evolution of seed-bearing quasi-ferns 241-243 



Ultra- relationship of the cycadalean gymnosperms (or the cycadeoid 



angiosperm juxtaposition) 243-246 



Bibliography 249-256 



Explanation of Plates 259-284 



Plates 



List op Text Figures 285-286 



Index 289-295 



Addenda et Corrigenda 296 



