52 GEOLOGY AND MINERAL RESOURCES OF MISSISSIPPI. 
Coman day. — A similar deposit of clay occurs on J. J. Coman's land in sec. 8, T. 4 S. , R. 1 1 E^ 
The analysis is as follows: 
Analysis of Coman clay, Tishomingo County. 
[By J. Blodgett Britton, of Philadelphia, Pa ] 
Silica (Si0 2 ) 80. 07 1 
Alumina (AI2O3) 11. 46 
Ferric oxide (Fe203) 57 i 
Lime (CaO) 12 
Magnesia (MgO) 37 
Water and organic matter 6. 81 
Loss 60 ; 
100. OQI 
On the south side of Little Pennywinkle Creek the Tuscaloosa clay outcrops on the hillside] 
at about the same elevation as the white clay on Pennywinkle Hill. The clay is of a much] 
darker color than the latter and is highly stratified, almost approaching a shale. At the] 
first bench of the hill the Lafayette has been entirely removed, leaving a large outcrop of thej 
Tuscaloosa, which here is almost as black as lignite. 
Padenday. — At the spring in front of K.W . Paden's house in sec. 33,T. 5S.,R. 10E.,imme-j 
diately underlying the conglomerate at the base of the Lafayette a bed of very white Tusca- 
loosa clay outcrops. This clay is also exposed in a branch 100 yards west of the house and] 
again one-half mile farther west. It appears in all the deep 1 (ranches which have cut through 
the Lafayette in the above-mentioned section. This clay is reported to be 30 feet thick. Tts 
outcrop is usually marked by boh! springs of pure water, which has filtered through the over- 
lying Lafayette sands and pebbles. Near the surface the clay contains more or less staina 
from the oxidized waters of the Lafayette. The following is an analysis of this clay: 
Analysis ofPaden day, Tishomingo County. 
[By W. F. Hand, State chemist.] 
Silica (Si0 2 ) 80. 05 
Alumina (AI2O3) 12. M 
Ferric oxide (Fe 2 3 ) 1.6* 
Lime (CaO) 2J 
Magnesia (MgO) 2ffl 
Sulphur trioxide (SO3) Trace! 
Moisture 48 
Loss on ignition 4. 8a 
99. 513 
Clingscale day.— On Mr. Clingscale's place, in sec. 8, T. 5 S.-,R. 11 E., Dr. E. W. Hilgardj 
found a pure-white clay which was 30 feet thick, lie obtained a specimen, and the following! 
analysis shows it to be more free from magnesia, lime, and iron oxide than the Paden clay. 
Analysis of Clingscale day, Tishomingo County. 
[By Dr. E. W. Bilgard.] 
Silica (Si0 2 ) 90. S77 
Alumina (AI2O3) 2. 2l4j 
Ferric oxide (Fe 2 3 ) 126 
Lime (CaO) 140 
Magnesia (Mgo) Trace.* 
Water and organic matter 0.930 
100. 288 
Various dags- Near Dennis, on the farm of W. R. Davis, is a white clay interbedded in 
the Tuscaloosa sands. It contains minute particles of mica and differs from the white clays 
farther north in that it is less plastic. It is little more than a finely powdered silica, with 
just a sufficient amount of alumina to bond it. It burns to a cream color. 
Clay of the same character occurs along the headwaters of Lick Creek. On M. C. Hill's 
land, in sec. 17, T. 6 S., R. 10 E., a white to cream-colored clay outcrops along the creek for 2 
