On th ye i 2 ee a ne oe = 339 
the WECONEET Y - ° & Vi léGlts,. 
oO a 
cemented together by a ferruginous cement, forming a solid 
ledge on the edges of the water. This is the farthest point 
to the south where I observed this deposit ; but I was s told it oc- 
curs again on the Waccamaw river. 
In treating of the tertiary formations of our country, I have 
preferred using the conventional names adopted by Mr. Conrad; 
of upper, medial, and lower tertiary, to those of pliocene, mio- 
cene, and eocene, applied to similar formations in Europe. The 
former merely indicate relative position, aud are therefore sufli- 
Cient at present; the latter imply a relative proportion, of course 
not very exact, of extinct and recent shells; and though our own 
formations may now each give about the same proportion with 
the Einglich formations; still arhee two hours’ work may discover 
more th yun p 3in one mealies; besides some 
‘recent species not befo ticed in the formation ; and when our 
knowledge of the living shells of our coast is so imperfect, it 
certainly proves that the adoption “new names would 
now vould be Ae Ne I 
is cortainlynot.paoved;) ANAS -Oge -steninow al dil} ble 
| a ee Phe utitn:, atel Born e diffi- 
into the same three 
culties, if any are hereafter encountered will-be too apt to oie 
made to bend, or to be neglected, for the sake of ke iueaien nate 
favorite but unproved system of classification.» "This is subject, I 
hope, will be more filly dcosed by Mr: Cona, and sane 
by more complete details than I am able to furnish.” ‘ 
_ At the locality last mentioned, near Fart nc line, are 
found through the fields singular deposits of oyster shells, each 
extending over several feet square and about two feet deep. No 
rg cg ip ofthe: west or -eause-of these: collections: 
ras oe 
were made centuries Corn 
does not grow well T Sremeiresacur-semensrier pasted 
stp dma Lousy 60tae tesiheleentideileniias 
the Eutaw Springs, near Nelson’s ferry over the Santee, in the 
Western part of Charleston district. The striking similarity of 
this rock to that in Jones county, N. C. first attracted my atten- 
tion. Like-it the limestone rose above the surface in heavy rag- 
Sed ledges, here’ at least fifteen feet high; it-was of the same 
= ae 
3D! yeuow Corr, 3 : 
ae. Ee EE ee a nis oe ae <a | mee ee ee RAS , and they plese 
