6 CONTENTS. 



PAGE 



VII. THE PTERIDOPHYTES 183 



Class I. The True Ferns (Filicince) . . .186 

 Class II. The Horsetails (Equisetince) . . . 200 

 Class III. The Club Mosses (Lycopodince) . . .202 



VIII. THE SPERMAPHYTES 205 



Class I. The Gymnosperms 206 



Subclass I. The Cycads 



Subclass II. The Conifers ..... 



Subclass III. The Joint Firs .... 

 Class II. The Angiosperms 218 



Subclass I. The Monocotyledons . . . 220 



Subclass II. The Dicotyledons . . . .225 



APPENDIX 



THE CULTIVATION OF THE LOWER PLANTS- FOR LABORATORY 



USE 257 



REAGENTS, CULTURE MEDIA, AND STAINING FLUIDS . . 264 



GENERAL INDEX 267 



