166 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORr.
proximately sixty feet above the St. Johns River. A four-inch well drilled for B. F. Dotney, in 1909 by H. Mervin reached a total depth of 365 feet. The water in this well rises to within 48 feet of the surface. A number of flowing wells have been obtained, however, along the river, near San Mateo.
SATSUMA.
No artesian wells are in use at Satsuma. The water used at this place comes from surface sands or clays at a depth varying from 25 to 46 feet. Flowing wells have been obtained along the river north of town.
WELAKA.
Welaka is located on the St. Johns River about twelve mile-" south of Palatka. Records of two wells have been obtained at this place. One of these is the well now owned by the Welaka Mineral Water Company, a three-inch well, drilled in 19o6. The
first water under pressure was encountered at a depth of 16o feet. Below 16o feet the size of the boring was reduced to two inches and was continued to a total depth of 329 feet, at which depth a highly mineralized water is obtained. The well has 98 feet of three-inch casing and 213 feet of two-inch casing. The elevation of the wel above the St. Johns River is reported to be 22 feet. The water in the well comes to within 16 feet of the surface or stands 6 feel above the level of the water in the St. Johns River.
The following is an analysis of the water from this well. Analysis by Robert Spurr Weston, 14 Beacon Street, Boston, Mass.
Constituents. Parts per Million.
Silica..................................................12.00
Alumina.......... .......................................8.57
Iron carbonate ............................................... 12.00
Calcium chloride .......................................586.32
Calcium sulphate ............................................ 697.75
Calcium nitrate ............................................... T race
Magnesium bromide .......................................... 5.14
M agnesium chloride ................. ....................... 507.45
M agnesium carbonate ......................................... 241.72
Sodium chloride ............................................. 8808.52
Potassium chloride ........................................... 13.70
A second well at Welaka is owned by Mrs. Franklin Swift and was drilled by H. Mervin in 199 This is a four-inch well and
has a total depth of 151 feet. It is reported to be cased 104 feet and the water is said to stand eight feet below the surface.