TABLE OF CONTENTS. ix 



PAGI 



CHAPTER XVIII. CLASSIFICATION OF DICOTYLEDONS 181 



Choripetalce : luliflorce; Centrospermce ; Apfianocyclce ; Eucy- 

 clce; Tricoccce; Calyciflorce. 



CHAPTER XIX. CLASSIFICATION OF DICOTYLEDONS 

 (Continued) 210 



Sympetalce: Isocarpce, Bicornes, Primulince, Diospyrince; 

 Anisocarpce, Tubiflorce, Labiatiflorce, Contvrtce, Campanu- 

 Zfnce, Aggregate*. 



CHAPTER XX. FERTILIZATION OF FLOWERS .... 225 



CHAPTER XXI. HISTOLOGICAL METHODS 230 



Nuclear Division in Wild Onion ; Methods of Fixing, Staining, 

 and Mounting Permanent Preparations ; Reference Books. 



INDEX . 237 



