And the “ Great Carolina Marl Bed.” 59 
covered near an old causeway on the edge of the 
high land under the marsh. The following is a tabu- 
lar arrangement of the strata taken from above the 
Marl which lies four feet six inches below the surface 
of the marsh mud: 
FEET. INCHES. 
1st. Marsh Mud, filled with roots,. . 1 O 
2d. White Sand and a few pebbles, . . 0 
3d. Marl Rocks, (Phosphate-rocks,) . 1 
4th. Dark sand, lumps of blue ni 
anc: pebblesy! 21) 7: sat jt O 
5th. Blue and Gray Sand, atl a 
quantity of finely divided 
shelly matter, (Post-Pleiocene 
shells,) with casts in soft Marl 
and fish: bones and teeth,«.. . . 1 O 
W WwW 
Total, 
aS 
Or’ 
6th. Yellowish Marl containing 61 
per cent. of Carbonate of 
Sn StSe OP Ree) ke, © ne, ee AEE O 
“ At this depth the color changes with a green tint, 
and the Marl increases in strength to 71 per cent. of 
Carbonate of Lime, and continues thus seven feet 
deeper. The surface of the Marl Bed was found to 
be very much broken and irregular, having deep holes 
in it filled with blue mud and sand. Arrangements 
were immediately made to dig and marl lands exten- 
sively for the next crop, and a pit opened twenty feet 
wide and forty feet long.” 
