286 
FLORIDA state; geological survey. 
the bordering rivers, Telogia Creek and New River are the largest 
streams of the county. New River heads in central Liberty County, 
while Telogia Creek reaches north into Gadsden County. 
NOTES ON FULEERS EARTH. 
Fullers earth as indicated on the map, occurs at Rock Bluff and 
along the headwaters of Rock and Sweetwater Creeks. The section 
at Rock Bluff (p. 273) will serve to illustrate the conditions of occur¬ 
rence as seen in the northern part of Liberty County. The streams 
tributary to Rock Creek and to Sweetwater Creek cut deep channels 
in passing through the sands lying under the fullers earth. A section 
of this character is well seen on Spring branch which heads at Rock 
Bluff Postoffice and flows into Sweetwater Creek; and in a branch 
flowing in the opposite direction from the divide, also on a small 
branch heading on section 27, T. 2 N., R. 7. W. 
LEON COUNTY. 
Leon County lies to the east of Gadsden County extending from the 
State line and joining Wakulla County on the south and Jefferson 
County on the east. Leon County differs from Gadsden County in 
some important respects, both geologic and topographic. In Leon 
County limestone lies nearer the surface than in Gadsden County. 
The result is the formation by solution of large lake basins of which 
Lakes Jackson, Lafayette, Iamonia and Miccosukee are examples. 
Instead of well established surface drainage with many streams fed 
by springs, the drainage is largely subterranean, the rainfall entering 
the limestone. Underground solution therefore predominates over 
surface erosion. At Tallahassee and at places throughout the interior 
of the county generally an elevation of about 200 feet is reached. 
The red sands, corresponding to the red sands of Gadsden County, 
are medium coarse, but not so coarse as those found along the Apa¬ 
lachicola. The clays beneath these sands are less conspicuously de¬ 
veloped, and are in places absent. Inclusions of a gray calcareous 
sandstone in the red sands are very numerous. These sandstone in¬ 
clusions, however, are not confined to Leon County as similar in¬ 
clusions are found also in Gadsden County. 
NOTES ON FUELERS EARTH. 
In Leon County the fullers earth has been traced as far east as 
Tallahassee, having been obtained from a well in the southwest quarter 
of section 35, T.l N., R. 1 W. Fullers earth is also found thirteen 
miles west of Tallahassee on section 26, T. 1 N., R. 3 W. The deposits 
