CLARKE.] 
CLAYS, SOILS, ETC. 
295 
ALABAMA, MISSISSIPPI. 
A. Kaolin, Greenville, Alabama. Contains about 40 per cent of 
kaolin, with fragments of quartz, feldspar, and mica. Analysis by T. 
M. Chatard, record No. 1148. 
B. Residual clay from decay of Knox dolomite, Morrisville, Ala 
bama. Described by Russell in Bull. 52. Analysis by W. F. Hille- 
brand, record No. 797. See also analysis of the dolomite-. 
C. Loess from Vicksburg, Mississippi. Described by Chamberlin 
and Salisbury, 6th Ann., p. 282. Analysis by R. B. Riggs, record 
No. 291. 
Si0 2 .. 
A1 2 3 . 
Fe 2 3 . 
FeO.. 
MgO. 
CaO.. 
Na 2 0. 
H 2 at 110 c 
H 2 0, ign... 
Ti0 2 
^A 
MnO 
C0 2 
C, organic . 
S0 3 
CI 
69.84 
19.91 
.90 
.28 
.07 
.21 
2.14 
.06 
6.72 
trace 
100. 13 
B. 
55. 42 
22.17 
8.30 
trace 
1.45 
.15 
.17 
2.32 
2.10 
7.76 
99.84 
60.69 
7.95 
2.61 
.67 
4.56 
8.96 
1.17 
1.08 
1.14 
.52 
.13 
.12 
9.63 
.19 
.12 
.08 
99.62 
