156 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORT.
LOCAL DETAILS
DOCTORS INLET.
A well owned by D. D. Denham and drilled in 19o8 by D. C.
Stafford is located near Doctor's Inlet. This is a four-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 120 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 0. A. Buddington. 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, 191o. 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 (C ) ................................................. 9.
Sulphates (S04) ............................................. 7.
Phosphates (P04) ......... .................................. 0.
Carbonates (CO3) ............................................ 0.
Bicarbonates (H CO3) ......................................... 107.
Sodium and Potassium (Na & K) .............................. 14.
Ma nesium (M g) ............................................... 4.
Calcium (Ca)...... .......................................I6.
Iron and Alumina (Fe & Al)............................. Trace.
Loss on Ignition ......................... ................... 67.
Total dissolved Solids ......................... ..............'I55
Aside from the above well, the following two ecords of wells
have been obtained: A well on the property of Mrs. George Hal-