14 



The Bulletin. 



AVERAGE CHEMICAL ANALYSIS OF PORTER'S LOAM. 



AVERAGE MECHANICAL ANALYSIS. 



Surface Soil. 

 Subsoil 



Gravel. 

 Per cent. 



2.59 

 1.70 



Coarse 



sand. 



Percent. 



8.72 

 7.72 



Medium 



sand. 

 Per cent. 



6.61 

 5.81 



Fine Very fine ojij. 



aand. sand. 



Per cent. Per cent. 



19.25 

 17.17 



10.25 

 8.44 



Per cent. 



28.92 

 23.45 



Clay. 

 Per cent. 



23.24 

 35.40 



PORTER S BLACK LOAM. 



The soil of this type is a rich, loose, mellow loam from 8 to 36 

 inches deep. The color varies from dark brown in thinly forested 

 areas to deep black in shaded coves. Where there is a thick growth of 

 rhododendron and ferns so much vegetable matter has accumulated 

 that it gives the soil a mucky appearance. The subsoil is a yellowish 

 brown to dark brown heavy loam or red clay. The soil is developed 

 at high altitudes, usually from 3,000 to 6,500 feet, and occupies the 

 well shaded coves or tops of mountains. It has been derived from 

 the same character of rocks as the Porter's loam, the only difference 

 being the accumulation of organic matter by virtue of its position. 



AVERAGE CHEMICAL ANALYSIS OF PORTER'S BLACK LOAM. 



