254 
FLORIDA STATF GEOLOGICAL SURVEY. 
Grains per 
Parts per 
Constituents. 
U. S. gallon. 
million. 
Silica . 
.934 
16.012 
Oxide's of iron and alumina . 
.117 
2.005 
Carbonate of lime . 
. 9.900 
169.724 
Chloride of lime . 
. 2.761 
47.334 
Sulphate of lime . 
.405 
6.943 
Carbonate of magnesia . 
Chloride of magnesia . 
. 1.993 
34.167 
Sodium and potassium sulphates. 
Sodium and potassium chlorides. 
. 4.964 
85.102 
Boss, etc.. 
.183 
3.137 
Total soluble mineral solids. 
. 21.257 
364.427 
Suspended matter . 
. 1.168 
20.024 
Organic matter . 
Total soluble incrusting solids.. 
. 16.110 
276.188 
Total soluble non-incrusting solids_ 
. 5.147 
98.239 
The following is analysis of water from one of these wells. 
Analysis made in the office of the State Chemist, A. M. Henry, 
analyst: 
Well water of 155-foot city well of St. Petersburg, Pinellas 
County, Florida: 
Milligrams per liter. 
(Parts per million.) 
Silica (Si0 2 ) . 28.5 
Iron and alumina (Fe and Al). 0.9 
Calcium (Ca) . 92.6 
Magnesium (Mg) . 9.6 
Sodium (Na) . 
Potassium (K) . 
Chlorine (Cl) . 120.6 
Carbonates (CO 3 ) . 0.0 
Bicarbonates (HCO 3 ) . 216.6 
Sulphates (SO4) . 2.1 
Phosphates (PO4) . I- 5 
Total . 580.00 
The following is a log of a six-inch well, 99 feet deep, drilled 
by J. C. Danielson, and owned by the St. Petersburg Investment 
Company. The well was drilled in 1912 and is cased 64^4 feet. 
