32 



The Bulletin 



Surface soil- 

 Subsoil 



AVERAGE MECHANICAL ANALYSIS. 



Fine 

 gravel, 

 per cent 



15.50 

 14.34 



Coarse 



sand, 



per cent 



17.16 

 16.46 



Medium 



sand, 

 per cent 



Fine 



sand, 



per cent 



9.80 

 7.82 



16.98 

 12.36 



Very fine 



sand, 

 per cent 



9.22 

 5.84 



Silt, 

 per cent 



17.84 

 11.34 



Clay, 

 per cent 



12.90 

 31.52 



LOUISA SERIES. 



The soils of this series have a very small representation in this State, 

 and are of minor importance, occurring only in a few small bodies. 

 The material is derived from talcose and micaceous schists, and imper- 

 fectly crystalline elates. These soils are less productive than the cor- 

 responding types of the Cecil series, and more difficult to maintain in 

 good state of productiveness. Only one type has thus far been encoun- 

 tered in the State, the Louisa loam (mapped in the Statesville area as 

 Davie clay loam). Other types will be found in Wake and Lincoln 

 counties. 



LOUISA LOAM. 



The surface soil of this type consists of almost a white to yellowish- 

 gray silt loam, or loam, with an average depth of about 8 inches. This 

 passes gradually from the silt loam or clay into a friable clay of yellow- 

 ish-red color, and this grades at about 15 inches into a red clay. This 

 possesses a greasy, soft feel, due to the presence of small mica scales, 

 which constitutes one of the essential differences between this soil and 

 the Cecil types. This soil is very deficient in humus. Wheat, com, 

 and tobacco are the main crops grown. 



PENN SERIES. 



The Penn Series includes Indian red soils derived from the red sand- 

 stone and shales of Triassic. The soils of this series will occur only in 

 small bodies in a few counties of the State, in close association with the 

 Granville soils. They are usually well drained, but at the same time, 

 not so rolling and hilly as the Cecil soils, occurring mainly in the shal- 

 low basins of the Piedmont region. In this series the Penn silt loam 

 has been mapped in Eichmond County. 



PENN SILT LOAM. 



■ The surface soil of the type to a depth of 4 to 8 inches, consists of a 

 light-red to dark Indian red, heavy, silt, loam, or silty clay loam. The 

 subsoil is a plastic, heavy, clay, or silty clay of deep Indian red color, 

 which usually grades into a purple or brown fine sandstone at 24 to 30 

 inches. Small flakes of mica impart a smooth, velvety feel. This 

 type also includes a gray, fine, sandy loam, which belongs to the Gran- 

 ville series. The surface consists of level, undulating to rolling areas. 



