INORGANIC COMPOSITION OF 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., R. 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. 
