204 
GEOLOGY OF NORTH CAROLINA. 
average marl. No. 53 represents the marls on Little Contentnea and 
Sandy Run, on the borders of Pitt* and Greene. The sample was ob- 
tained at the road crossing, 14 miles north of Snow Hill, where large 
quantities have been dug for many years. It is found all along these 
streams, and has been used on most of the farms near them for many 
years, notably at the Streeter place on a large scale. Elias Carr, 
lower down the Contentnea, also used large quantities and with very 
striking results. About Marlboro, above and below, marl is everywhere, 
and it is ver} 7 generally and profitably used. At D. N. Joyner’s one 
mile east, is a bed 10 feet thick, and again two miles east, at George 
Joyner’s, is an extensive exposure. The bed at Marlboro on Middle 
Swamp is said to be 20 feet thick. Ir occurs again at Farmville, one 
mile north ; and three miles northwest, at Capt. Barrett’s, there is a bed 
L3 feet thick. Again at the old Bynum place, four miles from Marl- 
boro, and at Win. May’s, five miles north on the Contentnea, are other 
outcrops. Following down the course of the Contentnea to its mouth, 
marl is found on almost every farm. No. 54 represents the marls south 
of Marlboro towards Snow Hill. The sample is from Mr. Grimsley’s, 
three miles north of Snow Hill, whose bed is 10 to 12 feet thick, and 
filled with shells and abounds in fragments of whale vertebrae ; and there 
are other outcrops between this point and Marlboro, as at Dale’s, Ed- 
wards’, Ac. No part of the state is better supplied than this region. 
Blue Mavis of Beaufort and Parnflico 
55 
56 
57 
58 
59 
60 
Silica, Insoluble, 
“ Soluble, 
81.50 
1.8S 
36.94 
62.69 
74.43 
74.50 
76.21 
Oxide of Iron and Alumina, 
4.85 
6.77 
7.95 
3.49 
9.28 
4.00 
Lime, 
5.31 
29.16 
14.16 
11.50 
5.32 
10.00 
Magnesia, 
0.20 
0.32 
0.68 
0.19 
0.29 
0.21 
Potash, 
1-07 
0.92 
0.54 
0.18 
0.31 
0.36 
Soda, 
0.44 
0.04 
0.13 
0.27 
0.15 
0.50 
Phosphoric Acid, 
0.18 
0.11 
0.25 
0.06 
0.12 
trace 
Sulphuric Acid, 
0.18 
0.81 
0.51 
0.31 
1.75 
Carbonic Acid, 
4.12 
22.72 
10.90 
9.02 | 
l 9.30 
8.00 
Organic Matter and Water,. 
0.68 
2.08 
2.18 
1.23 i 
Shell marl is found in Beaufort county on both sides of the Pamplico 
River ; on the north, from Washington to Pungo River. No. 55 is from 
the northern margin of the Big Savannah, near Pungo River. It lies at 
