x CONTENTS 



CHAPTER 



XVII. THK ESTABLISHMENT OF A FREE-LIVING SPOROPHYTK, 218 



XVIII. EVIDENCE FROM PALAEOPHYTOLOGY, 227 



XIX. AMPLIFICATION AND REDUCTION, 233 



XX. SUMMARY OF THE WORKING HYPOTHESIS, 244 



PART II. 



DETAILED STATEMENT OF FACTS 



INTRODUCTION, 2 55 



XXI. BKYOPHYTA, (i.) HEPATICAE, 257 



XXII. I'.RYOPHYTA, (II.) MUSCI, - 272 



XXIII. LYCOPODIALES GENERAL MORPHOLOGY, 288 



XXIV. LYCOPODIALES SPORE-PRODUCING MEMBERS, 311 

 XXV. LYCOPODIALES COMPARATIVE ANATOMY, 328 



XXVI. LYCOPODIALES EMBRYOLOGY AND COMPARATIVE SUMMARY, 340 



XXVI I. EU.UISETALES, 3 66 



XXVIII. SPHKNOPHYLLALES, - 39 8 



XXIX. SUMMARY FOR SPORANGIOPHORIC PTERIDOPHYTES, 423 



XXX. OPHIOGLOSSALES, 43 



XXXI. COMPARATIVE DISCUSSION OF OPHIOGLOSSALES, 476 



XXXII. FlLICALES BOTRYOPTERIDEAE, 495 



XXXIII. FILICALES MARATTIACEAE, 505 



XXXIV. FlLICALES OSMUNDACEAE, 53<3 



XXXV. FlLICALES SCHIZAEACEAE AND MARS1LIACEAE, 542 



XXXVI. FILICALES GLEICHENIACEAE AND MATONINEAE, - 553 



XXXVII. FILICALES LOXSOMACEAE AND HYMENOPHYLLACEAE, - 570 



XXXVIII. FILICALES THYRSOPTERIDEAK, DICKSOMF.AK, DENNSTAED- 



TUNAE, CYATHEAE AND SALYIMACEAE, 589 



XXXIX. KlI.K ALES-MlXTAE, 6l2 



XL. COMPARISON OF THE FILICALES, c>24 



