WATER SUPPLY OP PASTERN AND SOUTHERN FLORIDA. 201 
tion of the well above the St. Johns River is given as 24 feet, 
thus giving the well a total head of 47 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 (Si0 2 ) . 7 
Chlorine (Cl) . 9 
Sulphates (SO 4 ) . 7 
Phosphates (PO4) . 0 
Carbonates (CO 3 ) . 0 
Bicarbonates (HCO 3 ) . ITT 
Magnesium (Mg) . 4 
Calcium (Ca) . 16 
Iron and Alumina (Fe and Al).Trace 
Loss on Ignition . 67 
Total dissolved solids . 155 
Aside from the above well, the following two records of wells 
have been obtained: A well on the property of Mrs. George Hal- 
liday (known as the Borden estate), is 825 feet deep and six 
inches in diameter. The head is reported as 25 feet above the 
surface. A little southeast of this well is one owned by L. A. 
Hamilton. This has a reported depth of 785 feet, is six inches 
in diameter and is cased 100 feet. The head is given as 25 feet 
above the surface. A well four and one-half miles southwest of 
% 
Green Cove Springs, drilled by H. Mervin in 1907 for the TaVilla 
Turpentine Company, is mon-flowing. This well contains 128 feet 
of three-inch casing and 320 feet of two-inch casing. It is 406 
feet deep and the water stands 17 feet below the surface. The 
first rock noted in this well was at a depth of 170 feet. 
A well directly east of Green Cove Springs and across the 
St. Johns River is owned by W. A. Hallows. This well was 
drilled by N. B. Ivey and is used for irrigation and general do¬ 
mestic purposes. It is 500 feet deep, six inches in diameter and 
is cased about 200 feet. The water is reported to rise 35 feet 
above the surface. 
