TiiK nin.i.irriix. 



AVERAGE MECHANICAL ANALYSIS. 



15 



POKTEK S CLAY. 



The soil consists of a red or brown clay loam or loam varying in 

 depth from 4 to 7 inches. In a few places the soil is a yellowish or 

 gray loam, while on a few of the eroded knolls a red, stiff clay is 

 found on or near the surface. Occasionally a few shale or schist 

 fragments and even quartz gravel occur on the surface, and also a 

 little mica is present in the subsoil. Generally the soil is easy to 

 handle as there is enough fine sand and silt to cause it to be friable. 



The subsoil for tj'pical areas is a stiff red clay to a depth of 3 

 feet or more, but yellowish and reddish yellow mottlings may occur 

 near the base where aeration has been lacking. On some of the ridges 

 and sides of the knolls the partly decomposed rock comes to within 

 3 feet of the surface. This type occupies the knolls, ridges and foot- 

 hills, bordering the bottom lands. 



AVERAGE CHEMICAL ANALYSIS OF PORTER'S CLAY. 



Percentage Composition on the Dry 

 Basis. 



Pounds of Total Plant Food Con- 

 •stitnents per Acre. 

 Surface Soil to depth of 6| 

 inches. 2,000,000 lbs. 

 Subsoil to depth of 2S inches, 

 8, 000, 000 lbs. 



Volatile 

 matter. 



Nitro- 

 gen. 



Phos- 



Lime. 



phoric Potash. I nln 

 acid. ' ^'^^■ 



Nitro- 

 gen. 



Phos- 

 phoric 

 acid. 



Potash. 



Lime. 

 CaO. 



Surface 

 Sub.soil 

 Surface 

 Subsoil J 



2 mm. 



'2 mm. 



8.10 

 14.39 



7.58 

 8.77 



.097 

 .03 

 .087 

 .0427 



.067 

 .1326 

 .0417 

 .0567 



1.63 j .4924 



1.908 I .0926 



.722 I 1.579 



.682 1.544 



1857 

 2382 

 1454 

 3175 



1290 



8285 



860 



482 



30717 



151334 



12416 



50027 



9136 



7372 



26388 



112841 



