OUTLINE 



INTRODUCTION 



THE PLANT SOCIETIES. 



A. THE INLAND GROUP. 



1. The River Series. 



a. The Ravine'. 



b. The River BIufiE. 



c. The Flood Plain. 



2. The Pond-Swamp-Prairie Series. 



a. The Pond. 



b. The Undrained Swamp. 



c. The Prairie. 



3. The Upland Series. 



a. The Rock Hill. 



b. The Clay Hill. 



c. The Sand Hill. 



B. THE COASTAL GROUP. 



1. The Lake Bluff Series. 



2. The Beach-Dune-Sandhill Series. 



a. The Beach. 



b. The Embryonic or Stationary Beach Dunes. 



c. The Active or Wandering Dunes. The Dune Complex. 



d. The Established Dunes. 



APPENDIX. — The Principal Localities about Chicago for the 

 Study of Plant Societies. 



