194 THE CLAYS OF ARKANSAS. 
K. 15 W., is simply the southward continuation of the beds opened 
north of the railway. The bed extends around the hills to the south, 
the outcrop being in the faces of the hills that look toward Saline 
Riyer. It is exposed on nearly all the hillsides on the old military 
road running northwestward from Benton, probably extending to and 
beyond the borders of the county. 
In the broad bottoms on the west side of Saline Riyer the ''buck- 
shot clay" lies beneath the surface soil and good clays are not to 
be expected here in such localities within easy reach. 
The Tertiary hills west of the Saline begin about the middle of 
the SE. I sea 20, T. 2 S., R. 15 W. The Tertiary clays encircle 
these hills north of the railway and west of the riyer, and the pot- 
ter's clays will probably be found about the bases of these hills in 
the vicinity of Traskwood, on both sides of the railway. The geology 
of the region fayors the supposition that the potter's clays occur 
also within the drainage of Hurricane Creek, in the southeastern 
part of the county. 
Those who are in search of pottery clays in Saline and adjoining 
counties should bear in mind that such clays are at many places 
associated with leaf and other plant impressions and not often asso- 
ciated with marine shells. Many of the Saline County clays that 
are now regarded as but poorly or not at all adapted to the manu- 
facture of common pottery need only more careful study and experi- 
menting to make them available. That a clay can be used unmod- 
ified, just as it comes from the pit, is a mere accident, and while it is 
a fortunate one, we should not be satisfied to allow an industry to 
depend on it. 
VARIETIES OF KAOLIX. 
SALINE COUNTY KAOLIN. 
The syenite area of Saline County lies in sees. 35 and 36, T. 1 S., 
R. 14 W., and in sees. 1, 2, 9, 10, 13,^ 14, 15, 16, 20, 21, 22, 23, 24, 25, 
26, 27, 34, and 35, T. 2 S., R. 14 W. The margins of the crystalline 
rocks are covered by the Tertiary and Pleistocene deposits, which 
make up the remainder of the county southeast of the railway in 
Saline County. 
The kaolins found in Saline County are of three varieties — (1) a 
compact variety, derived directly from feldspathic rocks by decom- 
position; (2) a pisolitic variety, found associated more or less inti- 
mately with the bauxite deposits, and (3) a claylike variety of 
sedimentary origin, found at Benton. 
The first two of these varieties are not readily separable and will 
here be considered together. 
