196 
FLORIDA STATE GEOLOGICAL SURVEY. 
at 1,110 feet. Flow of 6,075 gallons per minute' at 
1,110 feet . 960-1110 
Hard rock, said to be sandstone, with some flint. 1110-1140 
Material not recorded . 1140-1170 
“Sandstone,” followed by limestone. Temperature' of 
water 85 degrees at 1,225 feet. 1170-1225 
Limestone, as above . 1225-1278 
“Sandstone.” Sample not seen. 1278-1293 
Fossiliferous limestone . 1293-1340 
Fossiliferous limestone, easily penetrated. Temperature 
of water 86 degrees at 1,340 feet. 1340-1390 
Denser limestone. 1390-1440 
The following is a log of the well of Mr. W. J. Sherman. 
This well was drilled by the owner in 1886 and is 210 feet deep. 
It is two inches in diameter and is cased 110 feet. The head is 
reported to be 32 feet above sea and the flow about 80 gallons per 
minute: 
Feet. 
Sand . 0 - 5 
Clay . 5 - 6 
White quicksand . 6 - 11 
Clay. 11 - 11 % 
Coarse pebbles and some shells.,. 11 %- 43 
Coarse gray to greenish sands, water-bearing; slight flow 43 - 45 
White plastic clay and fine sand. 45 - 90 
Greenish clay, very compact . 90 -142 
Hard rock . 142 -143 
Greenish clay with a mixture of black sand. 143 -172 
Hard rock; water rises 32 to 37 feet above sea. 172 -180 
White chalk rock (probably Vicksburg) . 180 -210 
SWITZERLAND. 
Switzerland is located in the area of artesian flow on the St. 
Johns River, in the northwestern part of St. Johns County. Wells 
at this locality reach a depth of from 350 to 500 feet, and the 
water is reported to rise 29 to 30 feet above the surface. 
YELVINGTON. 
Records of two wells have been obtained from and near Yel- 
vington. Well No. 1 is located near Yelvington depot and is 
