MOLL. 

 Bulletin of the Biological Society of Washington 



No. I 



A SKETCH 



OF THE 



NATURAL HISTORY OF THE 

 DISTRICT OF COLUMBIA 



TOGETHER WITH 



AN INDEXED EDITION 



OF THE 



U. S. GEOLOGICAL SURVEY'S 1917 MAP 

 OF WASHINGTON AND VICINITY 



BY 



W. L. McATEE 



WASHINGTON, D. C. 

 MAY, 1918 



