38 GEOLOGICAL STRUCTURE 01 THE 



Although, there can remain but little doubt of the 

 continuity of the fioetz lime-stone we are endeavour- 

 Ing to trace towards the south, still, in consequence 

 of the more recent alluvial deposits, it is not again 

 discernable until we arrive in North Carolina. Here, 

 Mr. Macluue remarks, that it runs »• parallel to, and 

 within the distance of from 20 to 30 miles of the 

 edge of the primitive, through South Carolina, Geor- 

 gia, and part of the Mississippi territory." That it 

 continues also eastwardly to the borders of the ocean, 

 I have reason to believe, from discovering it in the 

 immediate vicinity of Wilmington, North Carolina, 

 where it appears from beneath the alluvial sand-hills 

 of the town. There, though less compact than the 

 older secondary formation, it alike contains terebra- 

 tulits, flustras, niillepores, caryophylites, gorgonias, 

 as well as more recent shells, such as cardiums, pec- 

 tinites and ostreas, not very dissimilar to the exist- 

 ing species of the coast. In IS 16, while proceeding 

 through North and South Carolina, to the city of 

 Charleston, I remarked the first appearance of this 

 toetz lime- stone in the immediate neighbourhood of 

 Stateshurgh, in South Carolina, near the commence- 

 ment of the hills of Santee. Here we observe a fine- 

 grained slaty and ferruginous sand-stone, containing 

 scales of mica, and rounded nodules of argiUaceous 

 iron-ore, basseting out from beneath a conglomerate 

 made up of sea-shells and quartzose pebbles, cemented 

 together with calcareous as well as siliceous matter, 

 the latter of which often appearing in the form 



