ILLINOIS STATE GEOLOGICAL SURVEY 
 
 3 3051 00004 2246 
 
State of Illinois 
 
 Department of Registration and Education 
 
 Division of the 
 
 STATE GEOLOGICAL SURVEY 
 
 M. M. Leighton, Chief 
 
 Information Circular No. 7 April., 1934 
 
 DISPLAY OF PROMISING INTERIOR AND EXTERIOR 
 BUILDING STONES 
 OF NORTHERN AND WESTERN ILLINOIS 
 
 In keeping with its policy of disseminating information on 
 the mineral resources of the State, the Illinois Geological Survey- 
 announces that on Monday, April 23, and for the following month, it 
 will place on exhibit in its offices", 305 Ceramics .Building, 107 
 South Goodwin Avenue, Urbana, Illinois, a recently completed repre- 
 sentative collection of polished, waxed, or honed slabs of building 
 stones of northern and western Illinois, particularly from the 
 vicinity of Chicago, LaSalle , Rockford, Fulton, Galena, Alton, 
 Quincy, and Calhoun County. 
 
 The specimens have been obtained from deposits that have not 
 been developed for building stone and have not been previously 
 known to have the possibilities now revealed. The display includes 
 attractive varieties of brown, tan, or buff mottled dolomite of 
 varied texture and cellular structure, some of it resembling tra- 
 vertine; monotone buff stone; marble breccia; decorative traver- 
 tine (coralline dolomite); and limestones of interesting color and 
 texture. 
 
 Information regarding the deposits sampled can be obtained at 
 the State Geological Survey offices. 
 

WASCHER'S 1 
 JB&ARY BINDERS 
 807 S. Goodwin 
 
 Urbana, 111.