STATE OF ILLINOIS 



Henry Horner, Governor 



DEPARTMENT OF REGISTRATION AND EDUCATION 



John J. Hallihan, Director 



LAKE MANAGEMENT REPORTS 



2. Fork Lake near Mount Zion, Illinois 



David H. Thompson 



and 

 George W. Bennett 



NATURAL HISTORY SURVEY 



Theodore H. Fri«on, Chief 



Biological Notes No. 9 Urbana, Illinois January, 1939 



