NATURAL HISTORY SURVEY OF ILLINOIS, 



STATE LABORATORY OF NATURAL HISTORY, 



S. A. FORBES, Director. 



THE 



ORNITHOLOGY 



OF ILLINOIS. 



PART L DESCRIPTIVE CATALOGUE. 

 BY ROBERT' RIDGWAY. 



PART II. ECONOMIC ORNITHOLOGY. 



BY S. A. FORBES. 



VOLUME I. 



Published by Authority of the State Legislature. 



-RLT). TLL.: 

 H. W. ROKKER, PTCTNTEK AND BINDEB. 



1889. 



