GEOLOGY OF NORTH CAROLINA, 
3 84 
as these would supply the only elements of fertility which are deficient. 
Number 48 is a soil of somewhat similar physical appearance and growth) 
but with a larger proportion of hickory and a heavier forest, found on the 
eastern slope of a high broad-backed ridge near Cfillis’ Copper Mine, on 
the Person and Granville line. The soil is derived from an epidotic feld- 
spathic rock and hence has a large proportion of lime, magnesia, iron and 
alumina; but phosphoric acid is present in only very small quantities. 
Numbers 49 and 50 are specimens of the noted Hico tobacco lands in the 
northern part of Person. These soils are derived from feldspathic and 
hornblendie slates and gneisses, and are characterized by fine forests con- 
sisting of several species of oak, hickory, dogwood and occasional pines. 
These soils are a sandy and somewhat gravelly loam, of a light orchreous 
color. The former is from the farm of Me. M. McGehee, and the latter 
from Mr. J. Pointer’s. It will be observed that both these soils, and 
especially the former, have a good proportion of potash and lime, the 
most important elements of a tobacco soil ; and the decomposing 
gravelly particles of rock restore the waste of cultivation to a con 
siderable extent. But ashes and gypsum would add much to their 
fertility. 
Number 51 is a fine wheat and corn soil from the plantation of Mr. J. 
Davis, on Spew Marrow Creek, in the northern part of Granville county. 
It is a dark gray to black, gravelly soil, with a thick growth of hickory 
oak and dogwood. The yield of this land per acre has sometimes been 
above 100 bushels of corn and 50 bushels of wheat, without manure 
There is a large level body of such land about Shiloh church. The fer- 
tility is due to the syenytic and dolerytic rocks from which the soil is 
derived. 
Number 52 is another fine wheat soil from the banks of Neuse River 
in the southeast corner of Orange county, the noted Cameron plantation, 
which is a wide level alluvial tract of several thousand acres. The soil is 
a light ash-colored clay apparently ; the analysis however shows it to be 
mostly sand ; but the texture is very fine. The growth is white oak, 
willow oak, hickory, black and sweet gum and elm. The analysis shows 
a very rich and durable soil, with all the main elements of fertility in 
large percentage. 
Blackjack Foils. 
54 55 
64.96 50.07 
0.00 12.20 
' Silica. Insoluble, 
“ Soluble,. 
53 
85.33 
2.50 
