CLASSIFICATION BY THE BUREAU OF SOILS 81 



and peaches are produced in the northern and tobacco and cotton in 

 the southern states. 



York Series. The types included in the York series are pre- 

 dominantly gray to light gray at the surface and have yellow sub- 

 soils. They are derived from talcose and micaceous schists an"3 

 imperfectly crystalline slates. Crop yields are usually low and the 

 soils are exceedingly difficult to improve. 



II. THE APPALACHIAN MOUNTAIN AND PLATEAU PROVINCE 



This province embraces three subdivisions of the Appalachian 

 system, which extend from Xew Jersey and northern Pennsylvania 

 to central Alabama. They are as follows: (1) The Blue Ridge 

 region on the east and southeast side; (2) The Cumberland- Alle- 

 gheny plateau on the west; and (3) the Appalachian ridge and 

 valley belt between. The province includes two subordinate divi- 

 sions, lying outside of this general area: (1) the Ouachita and 

 Boston mountain ridge of the Ozark uplift west of the Mississippi 

 River, and (2) the area of Coal Measure rocks in western Ken- 

 tucky and southern Indiana. The Appalachian constitutes the 

 greater part of the province and forms a broad belt approximately 

 900 miles long. It includes the mountains, ridges, and valleys of 

 this area. This province is about 200 miles wide in Pennsylvania 

 and attains a maximum breadth of about 270 miles in Virginia. 



Berks Series. The soils of the series are yellowish-brown to 

 brown with yellowish subsoils. The soils are derived from the 

 Hudson River shales, which are yellow, brown, grayish, and olive- 

 Colored. They occupy rounded ridges and hills with good drainage. 

 They are suited to corn, oats, wheat, and Irish potatoes. 



Conasauga Series. The Conasauga scries are light brown, and 

 the subsoils are yellow and prevailingly of silty clay loam to silty 

 clay in texture. These soils are developed typically in flat to gently 

 rolling valley lands. They are derived from interbedded shale, lime- 

 stone, and fine-grained sandstone. Good yields of cotton, corn, 

 wheat, oats, and forage crops may be secured. 



De Kalb Series. The surface soils of this series are gray to 

 brown, while the subsoils are commonly some shade of yellow. The 

 soils are derived from the disintegration of sandstones and shales. 

 The surface features consist of gently rolling table lands, hills, and 

 mountains. The soils are generally not very productive, but the 

 stony and sandy members are adapted to orchard fruits, while the 

 6 



