100 FLORIDA GEOLOGICAL SURVEY—FOURTH ANNUAL REPORT. 
The following is an analysis of the water from this well. Analysis 
for the State Survey in the office of the State Chemist, A. M. Henry, 
analyst. 
Milligrams per liter or 
approximately parts 
Constituents. per million. 
Silica (Si0 2 ) 37.6 
Sulphates (S0 4 ) 7.6 
Bicarbonates (HC0 3 ) 623.0 
Carbonates (C0 3 ) . 0.0 
Nitrates (N0 3 ) ... 0.57 
Chlorine (Cl) .1691.5 
Iron and Aluminum Oxides ( Fe 2 0 3 and A1 2 0 3 ) .... 2.0 
Calcium (Ca) .. 10.4 
Magnesium (Mg) . 5.1 
Potassium (K) 13.1 
Sodium (Na) . 1307.0 
Total ... 3697.87 
The probable combination of the above is as follows: 
Sodium Chloride (NaCl). 2791.5 
Sodium Sulphate (Na 2 S0 4 ) . . .. 11.2 
Sodium Bicarbonate (NaHC0 3 ) . 754.7 
Potassium Bicarbonate (KHC0 3 ). 33.5 
Calcium Bicarbonate (CaHC0 3 ) 2 . 40.1 
Magnesium Bicarbonate (Mg(HC0 3 ) 2 . 30.2 
Near this deep well is a shallow well. This is six inches in 
diameter and reaches a total depth of 155 feet being cased the en¬ 
tire depth. The water which is soft and fresh comes to within three 
feet of the surface. 
The United States Government has sunk wells at Fort Pickens, 
Fort Barrancas and Fort McRee which furnish the general water 
supply for the forts mentioned. The following information regard¬ 
ing these wells was kindly supplied by the War Department, office 
of the Chief of Engineers, Washington, D. C. 
At Fort Barrancas two six inch wells have been drilled, depths 
278 feet and 370 feet. The water does not flow but is pumped by 
force with air compression. The well is located on ground 28 feet 
above sea level. An analysis of this water made in the chemical 
laboratory of the War Department and reported May 13, 1905, by 
Edwin B. Hodge, Chemist in charge, showed it to contain 13.50 
parts chlorine and 70.50 parts total solids per million parts water. 
At Fort Pickens four wells have been drilled varying in size 
and in depth as follows:'one well 310 feet deep, six inches in diam¬ 
eter; one well 315 feet deep, six inches in diameter; one well 310 
