22S GEOLOGY OF NORTH 
CAROLINA. 
Sulphuric Acid, ........... 
trace, 
0.170 
trace, 
0.152 
Phosphoric Acid, 
. 4.960 
6.820 
0.730 
6.300 
A r olatile Matter,.... ... 
. 22.065 
27.215 
14.913 
15.009 
Carbon, 
. 16.213 
4.726 
6.562 
34.473 
Water, 
0.700 
0.300 
2.588 
0.717 
100.000 
100.000 
100.000 
100.000 
Ash, or Roasted Ore, ...... 
. 60.475 
72.070 
76.902 
48.571 
Of which the composition 
is as follows 
20 
21 
22 
23 
Silica, 
. 15.137 
9.849 
44.740 
10.684 
Alumina, ................. 
. 7.018 
0.178 
25.527 
8.359 
Sesquioxide of Iron, , 
. 46.360 
56.562 
20.922 
33.252 
Sulphide of Iron, .......... 
, 0.909 
0.000 
0.788 
0.530 
Oxide of Manganese, ...... 
. 2.895 
2.749 
1.294 
3.089 
Lime, ................... 
. 15.742 
17.585 ■ 
4.108 
28.914 
Magnesia, .... ............. 
. 2.464 
1.624 
1.587 
1.777 
Sulphuric Acid, 
1.273 
1.989 
0.085 
0.421 
Phosphoric Acid, 
. 8.202 
9.464 
0.949 
12.974 
100.000 
100.000 
100.000 
100.000 
Which give, 
Metallic Iron. 
. 33.032 
39.593 
14.645 
23.619 
Sulphur, 
0.839 
0.800 
0.319 
.360 
Phosphorus,. 
, 3.581 
4.131 
0.474 
5.064 
No. 1 is the lower stratum of the black-band between the coal, about 
18 inches thick; No. 3 is the upper and earthy part of the same, 6 to 10 
inches. No. 2 is the seam, about 12 inches, lying above the coal and 
separated from it by 16 inches of lire clay. This is a hard, black, slaty 
ore, with occasional balls still more dense. No. 4 is the stratum, about 3 
feet above the coal, which consists of black, heavy, very tough, concre- 
tionary lumps of ore. The quantity of phosphorus which these beds 
contain is very notable, and is, of course, due to their highly fossiliferous 
character. And yet not only were there no fossil bones visible, as in the 
Egypt beds, but no identifiable organisms of any description, not even a 
shell. Of course the high percentage of this element excludes these ores 
from the manufacture of wrought iron. They must await the perfecting 
of the new industry of ‘‘phosphorus steel or the discovery of a prac- 
ticable method for the elimination of this injurious ingredient. With 
