434 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Dr. Morton's otherwise most accurate list of the cretaceous fossils 

 of New Jersey, of the six following species, viz. Balanus pere- 

 grinus, Pecten calvatus, P. membranosus, Terebratula lachryma, 

 Conus gyratus, Scutella Lyelli, and Echinus inflatus (see pi. 10., 

 Morton's Synopsis), which came from the eocene beds of South 

 Carolina, now under consideration, and led to a belief of the exist- 

 ence of a deposit intermediate between the chalk and tertiary strata, 

 and containing fossils common to both. 



One of the characteristic features of the region of tertiary white 

 marl and limestone in South Carolina and Georgia, is the frequent 

 occurrence of lime-sinks, or funnel-shaped cavities, arising from 

 natural tunnels in the subjacent limestone, through some of which 

 subterranean rivers flow. At Wantoot, there is one of these sinks 

 in the limestone, and a spring issues from the rock so much above 

 the temperature of the air during a frost as to send off clouds of 

 steam. 



At Cave Hall, two miles south of the Santee River, there is a 

 cavern about twelve feet high at its opening, at the base of a pre- 

 cipice of limestone sixty feet perpendicular. Large beds of the 

 Ostrea sellceformis occur in the limestone, which contains green 

 particles in the lower strata. A stream is constantly flowing out 

 of the mouth of the cave, and there is a line of sinks communi- 

 cating with the underground river-course, in which the under- 

 mining process is continually going on. I was informed that a 

 new "sink" had opened fifteen years ago within 110 yards of the 

 mouth of the cave, and that a mule fell into the hollow while draw- 

 ing the plough in the field above. Among other fossils from this 

 place, I found in the limestone the tooth of Myliobates, and in the 

 lower beds of calcareous greensand the same shells and corals as in 

 the incumbent white limestone. 



On reviewing the fossil Invertebrata which I collected from 

 various localities in the Santee white limestone of South Carolina, 

 I find many which will at once be recognised as species known to 

 belong to the eocene formation of Claiborne and other places, 

 among which I may mention Trochus agglutinans, Pyrula inau- 

 rata (Fusus Conrad), Natica cetites, Dentalium, same as one from 

 Claiborne, Lucina pandata, Lucina rotunda Lea, Lucina lapidosa, 

 Crassatella agreeing with a "Wilmington (North Carolina) fossil, 

 Chama, like one from Jacksonboro', Georgia, Pecten calvatus, P. 

 Lyelli Lea, Ostrea bellovacina, O. sellceformis. Besides these we 

 find Terebratula lacryma, Ostrea Carolinensis, Pecten allied to 

 P. pleuronectes Lam., and shells of the genera Nautilus, Voluta, 

 Turritella, Scalaria, Vermetus, Lucina, Cytherea, Corbula, Car- 

 dium, Lima, Pecten, Ostrea, Terebratula. 



The Echinoderms are referable to the genera Scutella and 

 Cidaris, and I met with several nautiliform foraminifera. The 

 corals, already alluded to generically, will be described by Mr. 

 Lonsdale.* 



* See " Report on the Corals," &c. in the present Number of the Journal. 



