12 BULLETIN 122, U. S. DEPAKTMENT OF AGRICULTUKE. 
Table I. — Showing the chemical composition of important 
[Analyses by W. O. Robinson.] 
Constituents. 
SiC-2 
TiOo 
A1 2 3 
Fe 2 3 
MnO 
Cr-0 3 
V 2 5 
Rare earths 
ZrO; 
M0O2 
NiO + CoO.... 
CuO 
CaO 
BaO 
SrO 
MgO 
K 2 
Na 2 
Li 
Rb 
Cs 
P 2 5 
S0 3 
Ignition less... 
Water at 110°.. 
Organic nat- 
ter (1) 
CO2 from car- 
bonates 
Coastal 
Plains 
province. 
No. 1. j No. 2. 
Per ct. I 
94.50 
.71 
2.07 
.83 : 
.007 
.004 
.01 
.02 j 
.02 
N. F. 
Doubt 
Per ct 
85.30 
.91 
8.82 
1.91 
.004 
.007 
.01 
.03 
.05 
N. F. 
Doubt 
Limestone Valley and 
Uplands province. 
Glacial and Loessial province. 
No. 3. No. 4. No. 5 
Per ct. 
79.35 
1.15 ! 
8.89 
4.44 ! 
.070 
.018 
.02 
.01 
.01 
N. F. 
N. T 
N. T. 
N. T. 
N. T. 
.39 
.38 
.63 
.004 
.004 
.021 
.02 
.03 
.04 
.09 
.19 
.39 
.10 
.12 
.67 
.11 
.07 
.24 
P. 
P. 
P. 
.001 
.001 
.001 
^. F. 
N. F. 
N. F. 
.06 
.04 
.18 
.07 
.13 
.13 
1.74 
3.22 
4. SO 
.48 
1.48 
1.99 
1.13 
.29 
1.96 
N. F. 
N. F. 
N. F. 
Perct. 
74.81 
1.28 
12.80 
5.28 
.053 
.008 
.02 
.02 
.05 
N. F. 
N. T. 
N. T. 
.40 
.027 
.04 
.33 
.75 
.16 
P. 
001 
F 
.15 
.19 
4.63 
2.38 
.93 
N. F, 
N 
Per ct. 
70.99 
1.01 
11.39 
4.23 
.180 
.004 
.08 
N. F. 
N. T. 
N. T. 
.93 
.060 
.11 
1.08 
2.71 
.82 
P 
.002 
N. F. 
.19 
.39 
6.08 
1.61 
2.87 
.33 
No. 6. I No. 7. 
Per ct. 
66.49 
1.01 
14.80 
5.99 
.100 
.005 
.06 
.03 
.07 
N. F. 
N. T. 
N. T. 
.35 
.063 
.11 
1.93 
3.58 
.66 
P. 
.002 
N. F. 
.16 
.14 
5.06 
1.40 
.82 
.56 
Per ct. 
75.12 
.68 
10.49 
4.13 
.022 
.009 
.02 
.02 
.03 
N. F. 
.04 
P. 
.49 
.042 
.04 
.48 
1.40 
.90 
P. 
.002 
N. F. 
.18 
.09 
4.44 
2.03 
2.43 
N. F 
No. 8. 
No. 9. No. 10. No. ll.'No. 12. 
Per ct. 
74.64 
.70 
12.26 
5.01 
.036 
.010 
.05 
.02 
.05 
N. F. 
.06 
P. 
.37 
.041 
.05 
.90 
1.99 
.99 
P. 
.002 
Per ct 
73.61 
.71 
9.67 
3.54 
.120 
.006 
.06 
N.T 
.06 
N. F. 
N. T 
N. T 
1.08 
.084 
.03 
.77 
2.28 
1.03 
P. 
.002 
N. F. 
N. F. 
.15 
.22 
.10 
.17 
3.59 
7.44 
1.28 
2.94 
.60 
4.29 
N. F. 
N. F. 
Per ct. 
71.43 
.77 
13.44 
4.28 
.104 
.013 
.04 
N. T. 
.04 
N. F. 
N. T. 
N. T. 
1.40 
.084 
.01 
1.28 
2.03 
.63 
P. 
002 
N. F. 
.16 
.14 
5.56 
4.12 
2.72 
N. F. 
Per ct. 
65.68 
.79 
14.15 
5.67 ! 
.068 
Trace. 
.08 
N.T. 
.04 
N.F.i 
N.T. 
N.T. 
1.36 
.53 
.05 
.83 
2.16 
1.39 
P. 
.002 
N. F. 
.15 
.17 
9.52 
3.39 
7.07 
N. F. 
Per ct. 
73.80 
.71 
13.24 
4.37 
.072 
.009 
.05 
N.T. 
.02 
N. F. 
N.T. 
N.T. 
1.19 
.051 
.03 
.39 
2.22 
1.75 
P. 
.002 
N. F. 
.11 
.03 
3.13 
1.18 
1.39 
N. F. 
N. T. Not tested. N. F. Not found. P. Present. (1) Determinations by W. B. Page, of this bureau. 
(21) York silt loam, Bethany, S. C, f mile east of Kings Mountain 
battleground. Depth to 10 inches. This soil is derived from im- 
perfectly crystalline rocks, consisting mostly of talcose and micaceous 
schists. It belongs to the Piedmont Plateau province. In appear- 
ance it is an almost white silty loam full of small spangles of mica. 
The spot from which this sample was taken supports a virgin growth 
of shortleaf pine and red oak. Nearby fields were in poor condition 
and the type is markedly infertile. This sample contained 7.6 per 
cent stones. Of this amount 59 per cent was quartz and 41 per cent 
was mica schist. 
(22) York silt loam, subsoil of No. 21, depth 10 to 22 inches. This 
sample contained 8 per cent of stones. Sixty per cent was quartz and 
40 per cent mica schist. The mica schist particles had largely disin- 
tegrated and fell to pieces when washed with water. 
(23) Louisa loam, 1^ miles southeast of Trevilians, Va. Depth 
to 12 inches. This type belongs to the Piedmont, and is formed from 
talcose and micaceous schists and imperfectly crystalline slates. It 
is a friable pale-yellow loam. The sample was taken from a wood- 
land, principally of Spanish and red oak. Nearby fields supported 
scant crops, and the fertility would be considered low. This sample 
