CLASSIFICATION BY THE BUREAU OF SOILS 93 



Crowley Series. The soils range from ashy gray to light 

 brown in color, with mottled brown, yellow and red, to almost uni- 

 formly yellow clay subsoils. Lime and iron concretions are present 

 in the subsoil, which is quite impervious to water. This feature 

 favors the production of rice. The topography is flat. They are 

 typical prairie soils of Louisiana and Arkansas formed or reworked 

 loessial material. 



Durant Series. The series consists of dark gray to dark brown 

 surface soils, with yellow to dark brown subsoils. They are derived 

 from soft sandstone and calcareous marl. The soils are productive, 

 giving fair yields of general farm crops. 



Duval Series. The soils are marked by their bright red color 

 and rather low lime content. They are derived from fluvial de- 

 posits of red sands and sandy clays. Three and one-half million 

 acres have been mapped. 



Edna Series. The soils of this series are gray to dark gray. 

 The subsoils consist of gray or mottled gray and yellow, heavy, im- 

 pervious clay. The topography is level to gently undulating. They 

 are derived from the weathering of noncalcareous marine deposits. 

 The supply of organic matter is low. They are not very productive, 

 but cotton, corn and general farm crops are grown to some extent. 

 The area mapped comprises 1,500,000 acres. 



Elkton Series. The soils are light gray to white and the sub- 

 soils are mottled whitish gray and yellow. U ravel or coarse sand 

 usually saturated with water is found at a depth of 2VL> to 3 feet. 

 They are of rather low agricultural value. 



Goliad Series. These soils are prevailingly dark gray to black 

 with reddish brown to red sandy loam or sandy clay subsoils, in the 

 lower portions of which a white, soft, calcareous substratum is en- 

 countered. The soil material consists of weathered marine deposits. 

 They are fairly productive. 



Greenville Series. These soils are reddish brown to dark rod 

 and generally loamy. THe subsoils consist of red friable sandy clay. 

 The types occupy level to gently rolling areas in the Coastal plains 

 uplands. They are well adapted to cotton, corn, forage crops and 

 oats. 



Houston Series. The soils are black and high in lime, espe- 

 cially the subsoils, which in some of the types consist of white 

 chalky limestone. The members of the series occur principally in 

 the black calcareous prairie regions of Alabama, Mississippi and 

 Texas. The soils have been derived from the weathering of cal- 



