The Buli^ktin 



17 



to bake or run together than the silt loam. These particles also prevent 

 to a noticeable extent surface washing and erosion. Like the other Ala- 

 mance types, it is deficient in vegetable matter, and this can be supplied 

 by turning under green manuring crops or by the addition of barnyard 

 manure. Deeper plowing and thorough pulverization of the soil is 

 recommended for increasing the yields. 



In the following table is given the analyses of Alamance gravelly 

 silt loam type of soil and subsoil : 



AVERAGE CHEMICAL ANALYSIS. 



AVERAGE MECHANICAL ANALYSIS. 



Surface soil- 

 Subsoil 



Fine 



(jravel, 



Per Cent 



1.9 

 0.6 



Coarse 



Sand, 



Per Cent 



2.9 

 0.9 



Medium 



Sand, 

 Per Cent 



1.4 

 0.4 



Fine 



Sand, 



Per Cent 



4.1 

 0.9 



Very Fine 



Sand, 

 Per Cent 



13.0 

 13.9 



Silt, 

 Per Cent 



63.1 

 33.6 



Clay, 

 Per Cent 



13.7 

 49.1 



ALAMANCE SLATE LOAM. 



The fine inatei'ial of the surface portion of this soil consists of a gray 

 silt loam underlain at about 6 inches by a pale yellow compact silt 

 loam or silty clay loam which extends to a depth of 10 to 18 inches. 

 Below this is found broken slate or bedrock. In places the slate rock 

 outcrops or immediately underlies a thin covering of surface soil. Gray 

 or bluish slate fragments of varying sizes are strewn over the surface 

 and mixed with the soil. These fragments interfere with cultivation, 

 and only the less stony areas are cultivated. Most of the type should be 

 devoted to pasturage or forestry purposes. 



It is excessivley drained, and crops suffer from ordinary droughts. 

 There are almost 14,000 acres of this type developed on the ridges, 

 knolls, and hilly areas scattered throughout the southeastern, central, 

 and extreme northern parts of the county. Some corn, cotton, and 

 sorghum are grown on the areas where there are a few inches of sub- 



