106 



ON THE SECONDARY AND TERTIARY FORMATIONS 



It is very white and good lime, such probably as the other local- 

 ities described would afl'ord, if worked as extensively. It is 

 packed in boxes, which hold about three bushels, and these are 

 sold along the river at the same price as a cask of Thomaston 

 lime, three dollars ! The locality is probably injudiciously se- 

 lected, as it is eight miles from the river, up a little stream called 

 Brier's creek, which js navigable for boats and rafts but a short 

 time in the year, while the same bed might no doubt be found 

 and opened on the river. 



The inferior limestone at Shell Bluff belongs to a higher for- 

 mation, and cannot be so important, though here too a great deal 

 of cheap lime might be made from the rock and the fossil Ostrea. 

 The specimens I collected at Shell Bluff, and on which I de- 

 pended to describe the locality, having been lost, I will attempt 

 no account of it, as it could now be only a repetition of what 

 others have said. In one of the lowest fossiliferous bands at the 

 bluff, I discovered a small jaw-bone of some land animal, which 

 has not before been noticed there. 



Catalogue of Medial Tertiary Fossils found at the Natural Well, Duplin County, North 

 Carolina. Those in italics are neio ; of tlwse undetermined, only the generic Qiame is 

 given. 



Amphidesma constricta^^ 



Amphidesma. y 



Anomia ephlppium.v 



Area incile. v' 

 " transversa. \/ 



Aitarte lyrata. v 

 " lunulata. ^/ 



Astarte. 



Balanus o\-ularis. 



Buccinura lunatumV * / 

 " interruptivm.s/ / 



" multinigatum.V 



" obsoletum^' 



Calj-ptrea costata.^ 



Cah^trea. 



Calyptrea. 



Cancellaria lunata. 



" perspectiva. 



Cardila tridentata.^ 

 " perplana. ^, 



Carditamera arata. 



s 



Cassis IIodgii>y 

 Cerithium Carolinensis. y/ 



" dislocatum. ^ 



" unilineatum. ,_ 



Chama congregata., 

 Conus adversarius. ^ 

 Corbula cuneata. 

 Crassalella undiilataX 

 Crepidula fornicata.v 

 Oypraa Carolinensis, \/ 

 Cytherea Carolinensis. • 



" reporta. ^•• 

 Diplodonta Americanay . 

 Dispotaa multilineata. ij 



'• dumosa. > ' 

 Fasciolaria mutabilis.v' 



'' rhomboideay 



Fissurella.'v/ 

 Fulgiir canaliculatus \j 

 " excavatus. ~J 

 " perversus. \/ 



