ECONOMICAL GEOLOGY. 
193 
is a good representative of the marl beds of the immediate neighborhood, 
at Jesse Flowers’, Ivornegay’s, Benj. Carr’s, &c. In this region the 
Eocene marl has been commingled with a considerable percentage of the 
underlying greensand, and contains numerous sharks’ teeth, rounded 
fragments of bones and coprolites. 
14 
15 
16 
17 
18 
19 
20 
(20) 
Silica, Insoluble, 
11.86 
11.50 
4.88 
15.28 
27.54 
52.82 
3.82 
Silica, Soluble, 
1.16 
1.78 
2.64 
0.74 
Ox. of Iron and Alum., 
.... 2.43 
3.53 
3.87 
1.60 
2.86 
4 40 
6.68 
1.62 
Lime, 
.... 46.88 
44.55 
42.85 
50.80 
4J.70 
2S.98 
20.94 
50.04 
Magnesia, 
.... 1.11 
0.23 
0.67 
0.67 
0.06 
4.60 
0.65 
1.72 
Potash, 
. . . . 0.52 
0.96 
0.60 
0.37 
0.34 
0.51 
0.55 
trace 
Soda, 
.... 0.20 
0.36 
0.28 
0.42 
0.20 
0.00 
0.03 
0.14 
Phosph. Acid, 
.... 0.47 
0.06 
0.43 
0.45 
0.24 
0.43 
0.27 
0.34 
Sulphu. Acid, 
. . . . 0.70 
0.3S 
0.30 
0.33 
0.50 
0. 13 
0.21 
0.45 
Carb. Acid, 
.... 37.03 
34.98 
33.83 
40.60 
32.33 
27.20 
15.90 
40.55 
Water and Org. Matter, 
5.06 
3.22 
C.37 
0.27 
5.47 
4.80 
0.10 
0.58 
Nos. 14 and 15 are from Onslow count}’, which is for the most part 
underlaid with marl and limestone of this period. The first is from the 
pits of Dr. Duffy, near Bicliland, who makes much use of it, and with 
great benefit to his land. Dr. D. also uses the shell marl. No. 15 is 
from E. L. Frank’s, Cohorn Creek, on the borders of White Oak Swamp. 
About Richland, on Chapel Run and other streams, are cliffs of lime- 
stone, as well as on some parts of Dr. Duffy’s plantation. This marl 
extends southward towards Jackson, being in places compact, as about 
the Alum Spring and Crane Ponds, and again loose and uncompacted, 
and sometimes much mixed with the greensand, which seems to have 
been washed up by the waves and re-deposited with this formation, as about 
Mt. Olive. A specimen from E. F. Jamin’s shows only 49.28 per cent, 
of carbonate of lime. 
No. 10, (as well as 15), is a friable, rather fine-grained calcareous sand- 
stone, of a grayish to yellowish white color, and is found on the banks of 
Trent River, some six miles above Trenton, in Jones county. No. 17 is 
from Mr. J. A. Heath’s, 8 miles southeast of Kinston, Lenoir county. 
No. 18 is from Maj. Blount’s place, some 7 or 8 miles above Kinston, on 
the Neuse. A very similar specimen is from Jno. E. Wooten’s, about 5 
miles Southeast of Kinston. This last has a slight sprinkling of the 
green grains from the lower formation. Dr. Emmons gives two analyses 
of Eocene marls from Jones county, which had been used as fertilizers, 
both from J. II. Ilaughton’s place, the first showing 85.20 per cent. «f 
carbonate of lime, the second 56.06 ; also another from W. Wadsworth’s 
in Craven, which contains 71.22 per cent. Mr, W. used 75 to 100 bush- 
