128 Glacial and Loessial Soils. 



type is covered by forest. Corn is the chief product, but consid- 

 erable areas are devoted to wheat and oats. 



1-234 



Soil (1) 33 17 25 25 



Subsoil(l) 37 17 20 26 



Acres. 

 Posey County, Ind 1, 600 



Shelby clay. — Fine sandy or silty loam of a gray or brown color, 

 from 3 to 8 inches deep, grading into a reddish-yellow sandy clay 

 which extends to a depth of 3 feet or more. Locally termed ' ' white 

 dUk lands." Iron pipes and concretions are usually found. The 

 subsoil is made up mainly of pockets of sand and clay with occa- 

 sional thin lenses of cherty gravel. Is of glacial origin occurring 

 below the Shelby silt loam, and exposed through stream cutting 

 and erosion of the overlying prairie. Occupies steep slopes adja- 

 cent to the water courses. Native growth is white and scrub oak 

 with a scattering of red oak and hickory. Much less productive 

 than the Shelby silt loam. Adapted to pasturage and poorly 

 adapted to wheat and corn. The former yields an average of 

 about 10 bushels and the latter about 25 bushels per acre. Used 



almost exclusively for pasture. 



12 3 4 



Soil (3) 14 32 40 13 



Subsoil (3) 12 20 25 40 



Acres. 

 Shelby County, Mo 71, 168 



Hobart clay. — A shallow covering of from 1 to 4 inches of a gray 

 or dark -brown clay, underlain to a depth of 3 or 4 feet by heavy 

 drab-colored clay. Below this the subsoil is mixed with fragments 

 of the underlying shale, and finally grades into shale rock. The 

 soil as well as the subsoil contains fragments of shale. When the 

 soil is wet, it is very adhesive under foot and has a greasy, oily feel. 

 In dry weather it often bakes to the detriment of growing crops. 

 On account of the impervious clay and shale underlying these soils, 

 there are many fresh-water springs. Owing to the stiff tenacious 

 character of the soil and its location on the steep sides of bluffs it 

 has little value except as a sheep and cattle pasture. 



12 3 4 

 Soil (2) 1 2 14 85 



Acres. 

 Jamestown, N. Dak 3, 712 



