OUACHITA COUNTY. 143 
In burning, this clay becomes a light gray and loses 9.68 per cent 
of its weight. 
The following is the section exposed at the Sulphur Spring coal 
drift, at the base of the hill near the house of the superintendent of 
the Ouachita Coal Company's mines. 
Section at Sulphur Spring coal drift. 
Ft. in. 
1. Yellow sand 15 
2. Thinly laminated sands and clay 7 
3. Sand 2 
4. Buff pottery clay 1 C 
5. Lignite 5 
6. Clay with fossil leaves 6+ 
No. 2 of the above section is made up of interstratified half-inch 
beds of sand and pure clay, with fragments of vegetation scattered 
through them, in which form it can not be utilized. No. 4 is a good 
clay and might be utilized if the bed were thicker. Near the mouth 
of the drift it is somewhat stained with iron, but will not be found 
so stained farther in the hill. No. 6 is said to have been penetrated 
6 feet in digging a sump in the coal mine, but at this depth it was not 
passed through. The leaf impressions in this clay are very abundant 
and fresh. 
Mr. Winslow reports the following section from the old mine half 
a mile from the Ouachita River, in the NW. | NE. \ sec. 12, T. 12 
S., R. 18 W. 
Section in old mine in NW. j NE. \ sec. J 2, T. 12 S., R. IS W. 
Sand on surface. Ft. in. 
1. White sandy clay '.'> 
2. ( 'hocolate sandy pottery clay 3 
3. Yellow and white sand 8 
4. Bluish-gray clay with sandy seams 8 
5. ( 'arbonaceous shale 6 
6. Lignite 5-6 
7. Gray clay not penetrated at 3 
No. 2 of the above section is a massive chocolate-colored clay 
that does not crack on drying. It seems to be available for the 
manufacture of both pottery and fire bricks. No. 7 is a tenacious 
pottery clay containing an abundance of well-preserved impressions 
of leaves. This bed strongly resembles the lower leaf-bearing bed of 
Atchison's pits at Perla switch, Hot Spring County, used for the man- 
ufacture of fire bricks. 
The clays mentioned in this section are not being utilized for any 
purpose, although a company is said to have under consideration the 
question of erecting brick and sewer-pipe works in the neighborhood. 
Mr. Kennedy reports also that at drift No. 1 on the Beach tract, 
within 200 feet of the county road, under the brow of a sandy hill, 
