112 GEOLOGICAL, RELATIONS OP ALABAMA 0LAT8. 



sold for |12 a barrel, and can be delivered, barreled, 

 on the boat on the Tennessee river for |1 a barrel. 



There is a red clay, suitable for paint, belonging to 

 the Sheffteld Paint Company, near the county line, 

 six miles from luka, Miss. The bed is ten feet thick. 

 The white clay from Clingscale's Mill, Miss., men- 

 tioned above in the extract from Dr. Hilgard's report, 

 comes from localities near the State line, west of Lau- 

 derdale county. 



In many parts of this county there are beds of 

 white pulverulent silica, which have occcasionally 

 found use. Thus at Florence the Mineral Paint and 

 Tripoli Company make a paint by mixing clay and 

 this fine silica together. At Waterloo, also, the same 

 white silica appears, as at Eastport, in Colbert coun- 

 ty. This material lias been used in the manufacture 

 of glass at Pittsburg, Pa, 



TEKTIARY AND POST TERTIARY FORMATIONS. 



The clays from these two formations have not yet 

 been specially investigated, the only representative 

 herein contained being the flint clay from Choctaw 

 county. The material is spoken of under the head of 

 Fire Clays. There is a very great abundance of this 

 clay in the counties of Choctaw, Clarke, Conecuh, 

 etc., in the lower Claiborne or Buhrstone division of 

 the Tertiary. Over the greater part of the Coastal 

 Plain, in the river second bottom or Post Tertiary 

 formations, there is the besit of the yellow loams 

 which are suitable for the making of the ordinary 

 building brick. These loams correspond in age, ap- 

 proximately, to ithe Plisocene clays of the northern 

 states, which are so extensively used for the same 

 purposes. Besides these sfecond bottom deposits, 



