240 GEOLOGICAL SURVEY 
Alumina and oxide of iron and loss=-___.--.-.----- 9.5 
Phosphate‘of limes] —--b essen epee ee oa a) 
100.0 
This was a white, granular marl, with few shells. 
From Dr. Mulderow’s, Black River, Sumter. 
Garbonatenof lime jose seeteet ay ae aera er On. 
Silicao2 le. oo- see cee eee ee Se Se ou Noe eee ered Oe) 
Alumina and@arom.- see sees =e once ee eee et Ono 
Phosphateiofiimenssas25s552 sas ess soon eee a trace. 
100.0 
From Mr. Williamson’s, five or six nviles south-east of Darlington C. H. 
Carbonatesotalimess see ee ears ee ale 60.0 
SiliGas see ee eee ake ate eee) 
MluminatandWiron se se Se eels fae ee ek eee S510) 
100.0 
From Dr. Zimmerman’s, south-east of Darlington C. H. 
Carbonateof Ynett- = 2222s ee sist ee See 68.0 
Silicate sees pura ea ona Saree nes etna tale je Fe 280) 
Alumina and oxide of iron and loss..--------------- 9.6 
Phosphate tor limes Sexseee. Saas ae eae aaa 4 
100.0 
From Mr. Dargan’s, Darlington C. H. 
Carbonate orslimeso. ee aqeee eee me es cesta che ceete 64.5 
Silica toes <2 06. 2 LS ete Seen Sa ae yarns 15.0 
Aluminatand sinonsn/S26) jhe oS Sos one SS 20.0 
Phosphate of lime: =) =.e 32 2 2 oe ooo ae mci nre O. 
100.0 
Tuble showing amount of carbonate of lime in the Pliocene marls. Ir. 
Ruffin. 
per cent. 
From Giles’s Bluff. Peedee, (overlying secondary) yellow marlstone- -.78 
H. Davis's land, back from above, yellow soft marl -.--~-------60 
co do. another piped! s-s=feS Stasi. aot Shs ceeseeeeeee 64 
ae do. another wee 2. ee eee See ee ee eee OO 
OO GodireyviseWenny eer ten as tan oe ee ena ecient 
: do. harderslayer 2. - Grete el. Se eet Bees9 
Gibson’s land, lower stratum, in cavern, on Peedee.----------51 
“ back-near-spring 22. 242222 eeee = es ee ees 
“  Witherspoon’s Bluff, (above Giles’s,) 13 feet above low water- -- .62 
ec do. 6:feetiaboves=.- Seba. -.74 
“ Goose Creek, near Cooper River, G. H. Smith’s land. -----.---82 
ee do another part of same exposure - --.--.----------- 80 
“ Branch of Swift Creek, near Darlington Court House, J. F. Er- 
vin’s, blue, taken 3 feet below surface of stratum.64 
a do. atrelshtefeet.= — =e ee 69 
ee do. James Gibson’s, yellow._--------. 63 
as do. do. another specimen- -64 
‘Black Creek, five miles south-east from Darlington Court House, 
John Fountain’s land, yellowish--~-..-.----------------- 57 
