STATE OF ILLINOIS 

 DEPARTMENT OF REGISTRATION AND EDUCATION 



A. M. SHELTON, Director 



DIVISION OF THE 

 STATE GEOLOGICAL SURVEY 



M. M. LEIGHTON, Chief 

 REPORT OF INVESTIGATIONS-NO. 11 



PLEISTOCENE STUDIES: 



1. A NOTABLE TYPE PLEISTOCENE SECTION: THE FARM CREEK 

 EXPOSURE NEAR PEORIA, ILLINOIS 



BY MORRIS M. LEIGHTON 



2. PRE-ILLINOIAN TILL IN SOUTHERN ILLINOIS 

 BY PAUL MacCLINTOCK 



Reprinted from the Journal of Geology Vol XXXIV, No. 2, 

 March-Apn', 1926. pp. 167-174, 175-180 



PRINTED BY AUTHORITY OF THE STATE OF ILLINOIS 



URBANA, ILLINOIS 

 1926 



