100 GEOLOGY OF NORTH CAROLINA. 
Phosphate of Iron, . . . . 
1.60 
Garb, of Lime, 
.. 11.40 
33.40 
1.00 
2.75 
1.50 
Magnesia, 
0.20 
13.60 
0.70 
1.60 
0.20 
Potash, 
0.38 
1.43 
0.23 
1.75 f 
0.25 
Soda, 
0.42 
2.12 
0.26 
0.30 f 
Sulphuric Acid, 
0.20 
Organic Matter 
4.80 
1.60 
2.00 
Water, 
3.80 
1.80 
1.50. 
2.33 
3.51 
The above are from Emmons, reproduced because the report in which 
they occur is out of print and little accessible. The first two represent 
the upper and lower beds at Blackrock, on the Cape Fear. C is described 
as representing the greensand marl as it exists near Kinston and at Mr. 
D. Fowler’s, in Bladen. D and E are from Tar River, near Tarboro’, the 
former from Gov. Clark’s plantation, and the latter from Col. Bridgers’. 
The analyses given below have been recently made : 
1234 5 678 
Silica, Insol., 
. 70.91 
75.66 
51.50 
82.38 
79.76 
77.94 
70.63 
68.91 
“ Soluble, 
Alum, and Ox. of Iron,. 
. . 7.58 
0.68 
7.59 
11.88 
0.62 
6.62 
4.23 
9.91 
Lime, 
. . 9.22 
8.15 
20.21 
2.86 
0.60 
6.58 
9.19 
8.89 
Magnesia 
.. 1.0S 
0.85 
0.14 
0.98 
0.43 
0.30 
1.20 
Potash, 
. . . 0.68 ) 
0.54 
0.67 I 
1.00 
0.88 
0.51 
0.62 
Soda, 
. . . 0.32 j 
( 
0.65 
0.11 
Phosphoric Acid, 
. . 0.04 
trace 
0.14 
0.12 
0.73 
0.24 
Sulphuric Acid, 
.. 2.12 
1.47 
1.53 
0.44 
0.48 
1.83 
4.21 
Carbonic Acid, 
. . 7.23 
6.53 
15.87 
5.27 
6.00 
5.76 
Water and Org. Matter, , 
. . . 0.82 
4.45 
5.75 
1,93 
0.46 
0.26 
Nos. 1 and 2 are from the bluff of Livingston’s Creek in Brunswick 
county, at the railroad bridge, and present a fair average of the green- 
sand marls of that creek. No. 3 is from the bank of the Cape Fear at 
Parsley’s Mill, Wilmington. No. 4 is from Roekfish Creek at railroad 
crossing, on the upper border of New Hanover. No. 5 is from the mill 
on Southwest Creek, some 4 miles from Kinston. No. (5 is from the marl 
pits of Mr. W. Taylor, on Lousin swamp, 7 miles north of Kinston. No. 
7 is from the bank of the creek at Suggs’ Mill, Wheat Swamp, some 9 
or 10 miles northwest of Kinston. No. S is from the cretaceous shell 
bluff in Snow Hill, Greene county. 
It will be seen that the proportion of greensand and silica are very dif- 
ferent in these specimens from those found in the New Jersey beds. 
There is, however, a good percentage of lime generally, and of potash 
and magnesia. And in fact these marls have been used with very great 
