1S2 
GEOLOGY OF NORTH CAROLINA. 
same as in the last case, with the addition of dogwood and blackgum. 43 
is from the vineyard of Col. D. M. Carter, one mile from Washington, 
Beaufort county. The tract had been long cultivated, but was at the 
time the sample was obtained, planted with scuppernong vines, of several 
years standing. 44 is from a piney, blackjack swell of land on the eastern 
edge of the village of Selma, Johnston county ; and is representative of 
a common class of soils which will be recognized from the description. It 
is yellowish brown in color, and composed predominant^-, of moderately 
tine sand. 
The obvious defects of all these soils are due to the excess of sand and 
the consequent small proportion of clay, and in part also to the chemical 
state of many of the other elements which are present in fair proportion. 
It is largely a quartzose granitic sand of so permeable texture, that the 
mineral elements are carried off by solution almost as fast as formed from 
the gradually decomposed rocky constituents. 
The advantages of the addition of humus, from any source, and of the 
calcareous marls, so abundant in the region, will be obvious when the 
analysis of some of these in the next section, are compared with those of 
the soils. 
Sand Il 'dl /Soils. 
46 
IT 
Silica, 
92.12 
94.80 
Alumina and Oxide of Iron, 
6.29 
0.65 
Lime 
1.13 
0.01 
Maenesia, 
0.03 
trace 
Potash, 
0.64 
trace 
Soda, 
0.35 
trace 
Phosphoric Acid 
0.00 
Sulphuric Acid, 
0.33 
Chlorine, 
Or era nip. Matter. 1 
1.50 
“ 
0.60 
W ater, ) 
1.20 
The first of the above analysis, No. 46, is that of a tolerably fine, nearly 
white sand, from the ridge of dune which crosses the peninsula of Pamp- 
lieo, in a northwest direction, in Pamplico county; the sample was got- 
ten not far from Grant's store, in the open “ piney woods,” or “ pine 
barrens,” characterized by a scattered growth of long-leaf pines and tus- 
socks of wire grass, with patches of shining bare sand between. And yet 
