294 
ANALYSES OF ROCKS, U. S. GEOLOGICAL SURVEY. 
[BULL. 168 
Clays collected by G. H. Eldridge. 
D, E. From the Sandlin place, 2 miles southeast of Marion, Hamil- 
ton County. 
F. From Richmond's, 6 miles south of Leesburg, Lake County. 
G, H. From Bartow Junction. 
Analyses D, E, and F by H. N. Stokes, record No. 1493; G and H 
by George Steiger, No. 1545. 
Si0 2 
A1A 
Fe 2 3 
FeO 
MgO 
CaO 
H 2 at 100° 
H 2 above 100 c 
P,0, 
co 2 
15.68 
.61 
.45 
17.28 
26.11 
1.97 
trace 
37. 90 
100. 00 
E. 
78. 23 
7.30 
1.85 
2.11 
1.60 
a 8. 48 
trace 
99.57 
84.41 
11.02 
trace 
trace 
.20 
\ a 4. 25 
trace 
99. 88 
99. 8: 
79.99 
79.48 
10.82 
12.14 
3.25 
2.64 
.25 
.09 
.07 
.07 
.23 
.31 
.90 
.86 
4. 09 
4.73 
none 
none 
100. 32 
a Includes a little COo. 
1. " Filtering clay," Ocala. Received from D. T. Day. Analysis 
by H. N. Stokes, record No. 1738. 
A1 2 3 27.78 
Fe 2 3 3.21 
MgO 64 
CaO 81 
Na 2 none 
K 2 .42 
H 2 OatllO° 7.38 
H 2 above 110° 12.14 
Ti0 2 1.27 
PA -- 5 - 54 
C0 2 none 
Organic matter 3. 61 
99.53 
