156 FLORIDA GEOLOGICAL SURVEY—THIRD ANNUAL REPORT. 
LOCAL DETAILS 
DOCTORS INLET. 
A well owned by D. D. Denham and drilled in 1908 by D. C. 
Stafford is located near Doctor's Inlet. This is a tour-inch well. 
372 feet deep, in which the water is said to rise twelve to fifteen 
feet above the surface. 
A second well, two and a half miles east of Doctor's Inlet, was 
drilled by H. Mervin for Messrs. DeLoach & Edwards, in 1907. 
This is a three-inch well and is 400 feet deep. It is reported cased 
t 20 feet and the water is said to rise twelve feet above the surface. 
Blue marl or clay from the depth of 198 to 398 feet is reported as 
encountered in this well. Immediately below this blue marl or clay 
the first hard rock was struck. 
GREEN COVE SPRINGS. 
Green Cove Springs, the county seat of Clay County, is supplied 
with water from two artesian wells. These wells are under private 
ownership. One is owned by N. B. Ivey, the other by O. A. Bud- 
dington. The well owned by Mr. Ivey is 815 feet deep, four inches 
in diameter, and cased 556 feet. The well is reported to have a 
head of 23 feet above the surface. The elevation of the well above 
the St. Johns River is given as 24 feet, thus giving the well a total 
head of 44 feet above the level of the water in the St. Johns River. 
The first flow in this well was encountered at a depth of 400 feet. 
The following is an analysis of the water from this well drawn 
January 6, 1910. Analysis made for the State Survey in the office 
of the State Chemist, A. M. Henry, analyst: 
Constituents. Parts per Million. 
Silica (Si02) ......... * 7 - 
Chlorine (Cl) ..... 9 - 
Sulphates (SO4) . 7 - 
Phosphates ( PO4) ... ... a 
Carbonates (CO3) ......... °- 
Bicarbonates (HCO3) . I0 7 - 
Sodium and Potassium (Na & K) . : 4 - 
Magnesium (Mg) .. 4 - 
Calcium (Ca) .. .... *6- 
Iron and Alumina (Fe & Al)...Trace. 
Loss on Ignition ..... .... 67- 
Total dissolved Solids ...... I 55 
Aside from the above well, the following two records of wells 
have been obtained: A well on the property of Mrs. George Hal- 
