190 THE CLAYS OF ARKANSAS. 
The elevations were observed (by aneroid barometer) at Mrs. 
Butler's and at the various clay pits north of the railway for the pur- 
pose of determining whether the clay pits were all upon the same bed, 
and to ascertain the dip of the beds. 
Elevations of the pottery clay beds near Benton. 
Feet. 
Rhodenbaugh 's pit " 340 
Hicks's pit 350 
Davis's pit 420 
Woosley's pit 440 
Bed in Mrs. Butler's well 325 
Bennett's pottery. 340 
Henderson's pit 380 
These elevations show that the beds have a gentle dip_to the east 
and south and that the Rhodenbaugh, Hicks, Davis, Woosley(?), 
and Henderson pits on the north side of the railway track are in all 
probability on a bed of clay identical with the bed cut in Mrs. Butler's 
well. The slight differences of the clays found in the various pits 
are of a character that usually occurs in any deposit in passing from 
one point to another. The thinness of the beds and their irregu- 
larities are no doubt produced by the greater erosion to which the 
northwestern or landward edges of these soft beds have been exposed. 
The Woosley bed appears to be higher than the others and to be 
only the small fragment of a bed which once overlay the region south 
of Woosley's, but which has all been removed by erosion except 
this remnant and its possible southward extension, which is to be 
looked for in the hilltops south of Mrs. Butler's well. 
The beds opened north of the railway (except Woosley's) appear 
to be all parts of the same deposit, and in all probability the clay 
may be found in a long outcrop that will connect the Hicks, Hen- 
derson, Davis, and Rhodenbaugh banks wjth the well at Mrs. Butler's. 
The sections and records given above relate only to the beds 
exposed in the immediate neighborhood of Benton. Most of the 
clays of these beds have been tested in one way or another. There 
is no reason for supposing that the valuable clay beds are confined to 
this locality, but the geology leads us to conclude that just as good 
deposits exist in other parts of the county. With a view to ascer- 
taining as much as possible regarding the distribution of the potter's 
clays in the surrounding country the following observations are 
brought together here: 
About the center of the SE. i SE. J sec, 3, T. 2 S., R. 13 W., there 
is a bed of clay on Robert Bigg's place that deserves special attention. 
The geologic observations at this locality were kindly furnished by 
Mr. E. C. Buchanan, of Little Rock, who made two trips to examine 
it, and who collected the sample whose analysis is given below. The 
