See Aw be Ost tr LT NOs Ss 
WILLIAM G. STRATTON, Governor 
DEPARTMENT OF REGISTRATION AND EDUCATION 
Vera M. Binks, Director 
Seether ie tis ORY. SURVEY DIVISTON 
Hartow B. Mitts, Chief 
Volume 26 Be EE LEN Article 5 
Hill Prairies of Llinois 
RO BRT. ALTE VERS 
Printed by Authority of the State of Illinois 
DekenAcNsA... ohLab EN Oks 
August 1955 
