36 GEOLOGY OF ILLINOIS. 



places along the bluffs of the Ernbarras, and may be found in the beds 

 of most of the small streams, and in nearly? every portion of the county. 

 Soil and Timber. — The bottom lands of the Embarras have a rich 

 alluvial soil, and when cleared and brought under cultivation, produce 

 large crops of corn, to which they seem best {adapted. The soil of the 

 prairie region is a chocolate colored clay loam, similar to that of the 

 adjoining counties, and produces fair crops of corn, wheat, oats and grass. 

 The timbered upland is similar to that described in the report on Craw- 

 ford county, and the varieties of timber noticed here was nearly the same. 

 Although not possessing so large an area of timbered land as Crawford 

 county, it has nevertheless an abundant supply for a much larger 

 population than it contains at the present time. 



