TABLE OF CONTENTS 



Page 



Title Page I 



Regents of Education 3 



Letter of Transmittal 5 



Table of Contents 7 



List of Illustrations 9 



I. A Preliminary Report on the Biology of Harding 

 County, Northwestern S. D., by Stephen Sargent 



Visher 1 1-103 



1. Introduction 11-15 



2. The Ecological Formations I S~^ 1 



The Steppe, 15-21 



Conditions of the Steppe 15 



Conspicuous Plants and Animals 16 



Adaptations of the Life 17 



Grassy Flats or Terraces along Valleys 22 



Wooded Areas 23 



Buttes 25 



Badlands 27 



Sandy Areas 28 



Acqnatic Associations 29 



3. List of Plants Collected in Harding County 32-68 

 4. The Birds of Harding County 68-87 



5. The Mammals of Harding County 87-92 



6. List of the Reptiles and Amphibians .... 92-93 



7. A Partial List of the Insects Collected . . 93~94 



8. List of the Mollnska of Harding and Per- 



kins Counties, by W. H. Over 95-96 



9. Notes on A .imals and Plants of Economic 



Importance 96-103 



Animals of Prey 96 



Prairie Dog 97 



Other Abundant Forms 97 



Useful Animals -. 98 



