88 



GEOLOGICAL RELATIONS OF ALABAMA CLAYS. 



drain pipe, vitrified brick, pressed brick etc., are here 

 in abundance. 



These clays are to be seen at intervals along the 

 road leading toward Montgomery, e. g., near Marvyn, 

 Crawford andi Society Hill, the prevailing variety be- 

 ing the mottled red or purple clay. Northwest of So- 

 ciety Hill these clays occur as far as Farrell's Mill, in 

 Macon county. 



Near Cowles' Station, at the ferry across the Talla- 

 poosa river, purple clays, three feet in thickness, show 

 in the river bank, and a short distance further down 

 the river at the site of Old Fort Decatur, a fine sec- 

 tion of the Tuscaloosa beds, including many bed« of 

 clay from one foot thickness and upwards is ex- 

 posed.* 



ELMORE AND AUTAUGA COUNTIES. 



In the vicinity of Old Coosada town, along itihe 

 banks of the river, about Robinson Springs and Edge- 

 wood, there are many occurrences of the clays of this 

 formation, analyses of which have been made by Dr. 

 Eies, and the results given below in the body of the re- 

 port. About Edgewood (there are several potteries 

 and one ochre mine using the materials of the Tusca- 

 loosa formation. McLean, Vaughn and Boggs 

 have potteries here, and Pressley has one further 

 west. 



At Chalk Bluff, near Edgewood, there is a very 

 characteristic section exposed in an ancient bluff of 

 the river, now at a distance of more than a mile from 

 that stream. The section is as follows: 



•Coastal Plain Report, p. 554, 556. 



