96 Rtsidual Limestone Valley and Upland. 



disintegration of the interbedded shale. These soils, as a rule, 

 occur in valleys bordered by areas of the more resistant sand- 

 stones and shales. They form one of the most productive series of 

 soils in the United States for the general farm crops. These soils 

 are liable to be encountered in small areas in the Piedmont Pla- 

 teau, and occupy very extensive areas of rolling country in middle 

 Kentucky and Tennessee. The most productive valley phase 

 occurs in the large valley between the Blue Ridge and the 

 Allegheny mountains. 



The Fort Payne series is derived mainly from the disintegration 

 of magnesium limestone (dolomite), which is usually very impure 

 and cherty. This gives rise to a very rough and even mountain- 

 ous topography, with generally stony soils. In productiveness 

 this series is far below the Hagerstown series. 



The Clarksville series, derived mainly from the St. Louis group 

 of the sub-Carboniferous, occupies both level upland areas and 

 rough, hilly country. Soils with the latter surface features are 

 generally unproductive and very stony, but admirably adapted to 

 fruit, especially to apples. The soil types in this series occupy- 

 ing level or gently rolling areas, formed from a less impure lime- 

 stone, are as a rule very productive and adapted to wheat, corn, 

 and tobacco. 



HAGERSTOWN SERIES. 



Hagerstown stony loam. — A fine sandy loam to line loam, 8 

 inches deep, brown or light-gray to yellowish in color. Subsoil a 

 yellowish-red clay loam to a stiff red clay. Soil and subsoil con- 

 tain angular fragments of cherty material. Occupies valleys and 

 rolling uplands. Drainage good. Derived from weathering of 

 impure or cherty veins in areas of pure massive limestone. 

 Wheat and corn principal crops, of which small yields are ob- 

 tained. Best adapted to fi'uit, especially apples. 



1-234 



Soil (9) 7 15 50 28 



Subsoil (9) 5 11 38 46 



Acres. 



Albemarle, Vu 59, 136 



Bedford, Va " 11, 950 



Huntsville, Ala -11,984 



Acres. 



Lockhaven, Pa 22, 016 



Pikcvillc. Tcnn 27, 392 



(iMai)ped as Murrill stony loam, wliich luiiiu' will not boused hereafter. 



