INORGANIC COMPOSITION OP SOME AMERICAN SOILS. 11 



tility. The sample was taken from a potato field. The kind and 

 amount of fertilization given is not known. This sample contained 

 2.2 per cent of stone. Of this amount 77 per cent was decomposed 

 granite, 15 per cent quartz, and 8 per cent diabase. 



(14) Fox fine sand, T. 11 N., E. 11 E., Otsego Township, Columbia 

 County, Wis. Through an error the subsoil of this type was ana- 

 lyzed rather than that of the Carrington loam. Fox fine sand is of 

 the Glacial Lake and River Terrace province and is derived from 

 glacial outwash or valley fill. The sample was taken from an old 

 outwash field. It is of low fertility and subject to eolian erosion 

 and deposition. This sample contained no stones. 



(15) Cecil clay, 2\ miles northwest of Charlotte, N. C. Depth to 

 6 inches. It is of Piedmont Plateau province and is derived from 

 granite, gneiss, and other crystalline rocks. The Cecil clay is a red- 

 dish clay loam to clay underlain by a stiff tenacious red clay. Both 

 soil and subsoil contain considerable sand which is characterized by 

 a large proportion of minerals other than quartz. It is one of the 

 strongest soils of the Piedmont Plateau and is used for general farm- 

 ing. This soil would be considered productive. It contained no 

 stones. 



(16) Cecil clay, subsoil of No. 15, depth 6 to 36 inches. This 

 sample contained no stones. 



(17) Cecil sandy loam, 3£ miles southwest of Charlotte, N. C. 

 Depth to 8 inches. This soil is derived from granite, gneiss, and 

 to a less extent from other crystalline rocks. It is a gray to yellowish 

 sandy loam, underlain by a red brittle clay. It belongs to the Pied- 

 mont Plateau province and can be successfully used for cotton, corn, 

 and forage crops. This particular sample was poor and had not been 

 fertilized in recent years. This soil differs from its subsoil more than 

 any other in the series in texture, color, and chemical composition. 

 There were no stones in this sample. 



(18) Cecil sandy loam, subsoil of No. 17, depth 8 to 36 inches. 

 This sample contained no stones. 



(19) Durham sandy loam, If miles northeast of Archer, Johnson 

 County, N. C. Depth to 10 inches. This sandy loam is formed 

 mainly from light-colored, medium-grained granite. It is a light- 

 yellow sandy loam of the Piedmont Plateau, lying along the border 

 of the Coastal Plain province. The field from which this sample was 

 taken had been cultivated for some years and produced poor yields. 

 Little, if any, fertilizer had been applied in recent years. The sand 

 of this soil contained a large percentage of potash feldspar, derived 

 from a light-colored granite. There were no stones in this soil. 



(20) Durham sandy loam, subsoil of No. 19, depth 10 to 36 inches. 

 This sample contained no stones. 



