Se ele 
OF SOUTH CAROLINA. 179 
this is found below the surface, and is only seen in the pits where mar! is raised for agricultural 
purposes. 
The highest point, on Cooper River, at which I saw any indications of this formation, is at Mr. 
Carson’s, where a large number of fossils, consisting principally of odd valves of Pecten eboreus, 
cemented together, were found, during the excavation of a ditch. Whether these indications have 
been followed up or not, I am unable to say. 
At the Grove, on the left bank of the river, the Phocene marl has been cut into during the con- 
struction of a canal. This marl, lithologically, can scarcely be distinguished from that of the 
Eocene on the river, and hence Pecten Mortoni, a fossil which seems to differ from P. plewronectes 
only in having the ribs on the inside, in pairs, P. Holbrooki, Scutella macrophora, and S. Caroli- 
nensis, were described as Eocene fossils. 
As this was the first point at which Mr. Lyell had seen the Tertiary of South Carolina, and the 
only place at which he had seen any beds newer than the Eocene, it is not surprising that he should 
have fallen into the same mistake, of citing these fossils as Eocene.* 
The upper valve, which he supposes to be that of O. bellovacina, belongs to O. disparilis, which 
bears so strong a resemblance to O. compressirostrat that they were once supposed to be identical, 
and it was quoted as a fossil common to the Hocene and Miocene formations. 
The large Spatangus, which he supposes common to the limestone of Santee Canal, is Spatan- 
gus orthonothus, Con. Syn. Amphidetus Virginianus, Edw. Forbes. 
There is not one of these fossils peculiar to this bed. P. Mortoni is found on the Waccamaw, 
on the Peedee, and in Darlington; S. Carolinensis occurs at Royal’s Landing, on the former river, 
and WS. macrophora on Goose Creek. he fossils that I identified here are Pecten Mortoni, P. 
eboreus, Cardium sublineatum, Solen ensis, Voluta mutabilis, Venus cribraria, Oliva litterata, 
Scutella macrophora, S. Carolinensis, and Amphidetus orthonothus 2 
Very similar to the bed at the Grove is one on Goose Creek: the marl, however, which is replete 
with casts, is rather more ferruginous, and somewhat harder. Prof. L. R. Gibbes pointed out the 
fact that many of the casts of the univalves were truncated at their upper extremity, as if that part 
of the shells had been filled with air or water, at the time when they were enclosed in their calca- 
reous matrix. 
The following list comprises all the fossils of this locality, that I could determine with certainty. 
Pyrula carica, Pholadomya abrupta, 
“  canaliculata, Tellina biplicata, 
“  perversa, Pecten Mortoni, 
«  papyratia, a hemicyclicus, 
Natica heros, _ “  eboreus, 
Cyprea Carolinensis, Lucina anodonta, 
Scutella macrophora, Panopea reflexa, 
Spondylus sp? 
Dr. Johnson, of Charleston, showed me some from a point on the Edisto, below Givham’s Ferry, 
* Quar. Jour. Geol. Soc. vol. I, p. 432. 
+O. bellovacina is considered, by Mr. Lyell, as synonymous with O, compressirostra. 
