On the Secondary and Tertiary Formations. 



}43 



cask of Thomaston lime, three dollars ! The locality is prob- 

 ably injudiciously selected, as it is eight miles from the river, up 

 a little stream called Brier's creek, which is 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 Co., N. C. Those in italics are new ; of those unde- 

 termined, only the generic name is given. 



Amphidesma constricta. 

 .^mpkidesma. 

 Anomia Ephippium. 

 Area incite. 



" iranaveVsa. 

 Astarte lyrata. 



" lunulata. 

 Astarte. 



Balanus ovularis. 

 Buccinum lunatum. 



" interruptum. 



" multirugatum. 



♦' ohsoletum. 



Calyptrea costata. 

 Calyptrea. 

 Calyptrea. 

 Canciilaria lunata. 



" perspectiva. 

 Cardita tridentata. 

 " perplana. 

 Carditamera arata. 

 Cassis Hodgii. 

 Cerithium Carolincnsis. 



" dislocatum. 



" unilineatum. 

 Cliama congregata. 

 Conus adversarius. 



Corbula ciineata. 

 Crassateila undulata. 

 Crepidula fornicata. 

 Cypraa Carolincnsis. 

 Cytherea Carolinensis. 



" reporta. 

 Diplodonta Americana. 

 Dispotoea multilineata. 



" dumosa. 

 Fasciolaria mutnbilis. 



" rhomboidea. 



Fissurella. 



Fulgur canaliculatus. 

 " excavatus. 

 " perversus. 

 Fusus. 



Gnathodon minor, 

 Infundibulum centralis. 

 Lucina Jamaicensis. 

 " radians. 

 " trisulcata. 

 Lunulites denticulata. 



" deprcssa. 

 Mactra crassidens. 

 " congesta. 

 " suhparilis. 

 Marginella. 



