98 PRINCIPLES OF AGRI CULTURAL CHEMISTRY 



Miami Series. Light-colored upland timbered soils. The 

 different members of this series are considered good general farm- 

 ing soils and have in addition special adaptations for truck, small 

 fruit, and alfalfa. 



Glacial, Lake and River Terraces. Clyde Series. Dark-colored 

 swamp soils formed from reworked glacial material deposited in 

 glacial lakes. A special use for these soils is the production of 

 sugar beets, while general farm crops, truck, and canning crops 

 are grown extensively. 



Fargo Series. Black calcareous soils rich in organic matter 

 formed by deposition of material in glacial lakes. This is the 

 most important group of soils in the Red River Valley, and 

 includes exceptional soils for the production of wheat, barley, and 

 flax. 



Residual Soils of the Western Prairie Region. Crawford 

 Series. Brown soils with reddish subsoils, derived from lime- 

 stones. The soils of this series range from rough areas suited 

 mainly for pastures to fertile general farming, fruit-growing, and 

 trucking soils. 



Great Basin. Bingham Series. Porous dark or drab colluvial 

 and alluvial soils underlaid by gravel or rock, occupying lower 

 mountain slopes. The lighter types, when irrigable, are devoted 

 to orchard fruits, and the heavier types, to alfalfa and sugar beets. 



Northwestern Intermountain Region. Bridger Series. Dark- 

 colored soils with sticky yellow subsoils, of colluvial and alluvial 

 origin. These soils generally occupy elevated foot slopes or 

 sloping valley plains and have not been developed to a great 

 extent. They are most extensively used for the production of 

 grain, and when irrigated, are utilized in the production of alfalfa 

 and other hay crops ; under favorable climatic conditions they are 

 adapted to fruits. 



Rocky Mountain Valleys, Plateaus, and Plains. Billings Series. 

 Compact adobe-like gray to dark or brown soils and subsoils, 

 formed mainly by reworking of sandstones and shales and 

 occupying old elevated stream terraces. This is an important 

 series adapted to alfalfa and general farm crops and stock raising; 



