ECONOMICAL GEOLOGY. 
175 
Marsh Soils — - Whke Marsh, Columbus County, c&c. 
20 
21 
22 
Silica, Insoluble,, ....... 
37.47 1 
54.42 
3.71 
“ Soluble, 
9.95 { 
0.40 
Alumina.. 
3.43 \ 
16.45 
2.52 
'Oxide of Iron,., 
“Oxide of Manganese, 
0.54 
Time,. 
0.45 
1.18 
3.08 
Magnesia, 
. . 0.5 S 
■0.07 
0.05 
Potash, 
... 0.09 
1.18 
0.49 
Soda, 
0.70 
0.84 
Phosphoric Acid, 
0.22 
0.25 
0.05 
Sulphuric Acid, . , 
0.10 
1.46 
1.40 
'Chlorine, 
0.03 
0.00 
'Organic Matter, 
Water. 
. 41.90 | 
5.30 j 
■20.92 
87.S0 
Sulphide of Iron, 
1.09 
Chloride of Sodium,. . . . . . 
1.63 
Number 20 is from White Marsh, a few miles southeast of Wkiteville 
•on the plantation of Col. V. Y. Richardson. The marsh is treeless— a 
'natural meadow, matted with coarse water grasses, weeds, and a few 
■scattered button bushes. It is overflowed a considerable part of the year. 
It is dark gray to black soil, three to four feet deep, and shakes under the 
tread ; but is dry and solid enough for cattle-grazing in summer and 
autumn. The analysis shows a very rich soil, capable of indefinite pro- 
duction, if drained. There are some 2,000 acres of this open grassy 
marsh in view .from one point. 
Number 21 is from the wide marsh which borders Newport river at 
Dr. Aren dell’s place, 7 miles above Morehead City. This marsh is one 
to two miles wide, and has been formed within a generation, filling up 
the old wide channel of the river and reducing it to a narrow serpentine 
bayou of a rod or two in breadth. The soil is of a dark, bluish gray 
color, and full of decaying grass roots and stems, and five to ten feet deep. 
It is seen from the analysis to be not only a very rich and inexhaustible 
soil, but to be capable of serving as a fertilizer for the neighboring region. 
Number 22 is from a marsh on Tar river, one mile above the town of 
Washington, on the plantation of Gen. Grimes. It extends a considera- 
ble distance along the river shore, and has a depth of soil of five to ten 
