70 DEPOSITS OP PHOSPHATE OF LIME. Imjll.46 
Per cent. 
Sulphuric acid . 0.5 to 2 
Lime 35.0 to 42 
Magnesia Trace to 2 
Alumina Trace to 2 
Sesquioxide of iron l.Oto 4 
Fluorine l.Oto 2 
Sand and silica 4.0 to 12 
Organic matter and combined water _ _ 2. to 6 
Moisture 0. 5 to 4 
Table of analyses of South Carolina rock phosphates by Dr. C. U. SIiepard,jr. 
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3.68 
1.50 
0.00 
.10 
0.84 
0.79 
0.57 
0.66 
Organic matter and com- 
4.78 
4.68 
4.28 
5.59 
3.89 
5.26 
4.47 
.07 
3.55 
4.22 
3.54 
5.80 
3.61 
4.31 
3.79 
3.75 
4.34 
Carbonic acid 
Equal in carbonate of 
10.69 
25.61 
9.73 
26.68 
8.84 
25.75 
10.04 
27. 01 
8.06 
27. 11 
8.04 
27.26 
8.19 
25.14 
8.61 
27.26 
9.84 
26.78 
Phosphoric acid 
Equivalent in bone 
phosphate to 
55.91 
58.24 
56.21 
58.95 
59.18 
59.50 
54.88 
59.51 
58.46 
Sand 
11.55 
12.41 
11.77 
11.37 
15.39 
9.06 
13.30 
9.06 
11.77 
Analysis of South Carolina rock phosphate from Oak Point Mine, by Dr. C. U. Shepard,jr. 
Bone phosphate of lime 58.66 
Carbonate of lime 6. 90 
Analysis ofphosphatio nodules from Bulow mine, property of William L. Bradley, by B. A. 
F. Penrose, jr. 
Bone phosphate of lime 62.039 
Carbonate of lime 6.914 
Organic matter and moisture 5. 106 
AMORPHOUS NODULAR PHOSPHATES OF NORTH CAROLINA. 
Deposits of phosphate of lime have been known to exist in the flat 
country near the coast of North Carolina for several years, but not much 
attention was paid to them until 1884, when, under the direction of Dr. 
Dabney, of the agricultural station of that State, they were thoroughly 
examined. The result seemed to show that the phosphates were either 
too scanty in quantity or too poor in quality to be of much commercial 
importance. They are found in the southeastern part of North Caro- 
lina, and principally in the counties of Sampson, Duplin, Pender, Ons- 
low, Columbus, and New Hanover. 
(544) 
