210 FLORIDA GEOLOGICAL SURVEY-SEVENTH ANNUAL REPORT. 
are well drained. These are grayish soils with yellowish or yellow¬ 
ish-gray subsoils. The types mapped constitute the main areas of 
deep sandy land. 
The hammock soils are comprised in three series—the Park- 
wood, Fellowship, and Gainesville. The heavy, clayey material of 
these is residual from the underlying rocks. In places the sandy 
surface portion evidently consists of unconsolidated sedimentary 
material. The Parkwood soils, comprising a clay loam and fine 
sandy loam, are characterized by the dark-brown or brown color of 
the surface soils and by a marly subsoil of yellowish to nearly white 
color. These are strong, productive soils, but low-lying and in part 
poorly drained. 
The Fellowship series includes five types—the sand, sandy loam, 
fine sandy loam, clay, and clay loam. These have grayish to black 
and almost mucky surface soils, underlain by plastic clay, of a mot¬ 
tled drab, yellow, and brown color, including frequently some red. 
The subsoil material is dense and impervious. The low -hammock 
areas are poorly drained, of semiswampy character, and support a 
hardwood growth. The high hammocks are not so well drained as 
might be expected in soils occurring in such sections. 
The Gainesville series comprises four types in this area. These 
are the calcareous high hammock soils of the area. The clayey and 
probably some of the sandy material is derived from limestone and 
associated sandy rock formation. These soils are characterized by 
brownish-colored or slightly reddish-brown sandy surface soils, fre¬ 
quently with some limestone fragments on the surface and in the 
soil mass. These are well-drained and productive soils, having a 
wide range of crop adaptability. The heavy subsoil and substratum 
material consists of plastic clay of a yellowish-brown to mottled 
yellowish and drab color. 
Considerable areas have been mapped as Swamp. These are low 
lying and more or less covered with water throughout the year. Cy¬ 
press is the characteristic growth. Flood waters spread over the 
areas, depositing rich sediments, and much organic matter is added 
by the decay r f the existing vegetation. The soil material of the 
Swamp varies greatly and no attempt was made at type separation, 
as much of the Swamp was covered with water at the time of the 
survey. A great deal of the land consists of muck or peat over- 
lying marl, the largest areas being indicated around Lake Pana- 
soffkee, including the areas covered with cypress and saw grass. 
