Xll TABLE OF CONTENTS. 



CHAPTER XXIV. 



PAGES 



Liverworts : Hepatic/E (Marchantia polymorpha) 139-148 



CHAPTER XXV. 

 Mosses : Musci (polvtrichum or mnium) 149-154 



CHAPTER XXVI. 

 Ferns: Filicine^ (the polypody or Christmas fern) I SS- I ^5 



CHAPTER XXVII. 

 Ferns, concluded: The sexual stage of ferns 166-173 



CHAPTER XXVIII. 

 Horsetails : Equisetine^ (the field equisetum) 174-179 



CHAPTER XXIX. 

 Quillworts: Isoetes 180-183 



CHAPTER XXX. 

 Gymnosperms : The white pine 184-193 



CHAPTER XXXI. 

 Morphology of the angiosperms : Trillium ; dentaria 194-202 



CHAPTER XXXII. 

 Prothallium and sexual organs of flowering plants .... 203-207 



CHAPTER XXXIII. 

 Seeds and seedlings 208 216 



