CLASSIFICATION BY THE BUREAU OF SOILS 101 



Benton Series. The soils are light brown or grayish brown to 

 gray colored, with light gray subsoils. They are derived from lime- 

 stone and shale and mostly used for grazing. 



Boone Series. This series consists of light gray soils of low 

 organic-matter content underlain by pale yellowish to slightly red- 

 dish yellow and often mottled, porous subsoils. They are derived 

 from sandstone and shales. The soils are often timbered and are 

 frequently thin and unproductive. The principal crops are corn, 

 oats, wheat, and hay. 



Clark Series. This series includes dark gray to brown or black 

 soils and grayish calcareous subsoils. They produce fair crops of 

 corn, kafir, wheat, sorghum, and alfalfa. 



Crawford Series. These comprise residual limestone soils of 

 dark brown to reddish brown surface soils and reddish brown to 

 red subsoils. Cotton, corn, wheat, oats, alfalfa, clover, and timothy 

 are grown. 



Englewood Series. The soils are of brown to reddish brown 

 color. The subsoils are usually reddish brown but sometimes brown. 

 They are derived from shale and sandstone. They are generally 

 adapted to corn, kafir, sorghum, and hay. 



Epping Series. The soils are white or light gray to buff and 

 are underlain by subsoils of similar character. They are derived 

 from shales and indurated clays. Wheat, barley, potatoes, and 

 alfalfa are the principal crops. 



Morton Series. The soils are brown in color and contain a 

 high content of organic matter. The subsoils are light brown- to 

 gray and are rich in lime. They are derived from sandstone and 

 shales. Wheat, barley, and flax are the principal products. More 

 than 13,000,000 acres have been mapped. 



Oswego Series. The soils arc light gray to dark gray, while 

 the subsoils are drab to yellow and are compact and impervious. 

 They are derived from shale and sandstone. Wheat, corn, oats, flax, 

 rye, and potatoes are grown. 



Pierre Series. The soils of this series are light brown to dark 

 brown, the immediate surface often being light gray. They are 

 usually compact and refractory. The subsoils are brown and com- 

 pact and grade into a substratum, of partially weathered shale. The 

 surface is generally irregular, being dissected or eroded and marked 

 by hills and ridges. Drainage is generally good. The typos fre- 

 quently contain rather excessive amounts of alkali. 



Sidney Series. The soils consist of brown surface soils, with 



