state of Illinois 

 John Stelle, Governor 



Department of Registration and Education 

 John J. Halllhan, Director 



PRELIMINARY REPORT OH 

 AVAILABILITY AiJD USE OF V-ATERFOVL FOOD PLANTS 

 IN THE ILLINOIS RIVLR VALLEY 



Frank C. Btllrosc, Jr. 

 Karr:: G. Anderson 



Published hy Authority of tiie State of Illinois 



NATURAL L'l STORY SURVEY 

 Theodore H. Prison, Chief 



Biological Notes No. 15 Urbana, Illinois Deocmbei*, 1940 



