188 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORT.
inch well drilled in 1907 by Capt. Alexander Near. It reached
a total depth of 318 feet and is cased IOO feet. The pressure of the well as indicated by the pressure gauge March 15, i9io was 1732 pounds. This gives the well a head of 40.4 feet above the surface, or estimating the surface elevation of the well to be 12 feet above the river level, a total head of 52.4 feet above the level of the water in Indian River. From an examination of a mixed sample from the drillings of this well it is seen that the Vicksburg Limestone is reached. From Mr. Gibbs' record made at the time the well was drilled it would appear that this formation was encountered at a depth of 221 feet. The log as made out by Mr. Gibbs is as follows:
Feet.
Surface sands and soil ..................................... o 3
Y ellow sand .............................................. 3 II
Coquina rock .............................................II 21
Fine gray sand ..........................................21 51
Shell and sand ............................................ 5 56
Hard shell rock ................................ ........ 56 -II9
G reenish clay .............................................1II9 -173
Dark colored rock; sharks' teeth .........................173 -173 2
Greenish clay ............................................. 173% -174%
Dark colored rock; sharks' teeth.......................174 4-175
G reenish clay ................................... ........ 175 -221
Vicksburg Limestone. Increase of flow with depth. A pressure of 172 pounds at this depth was shown by the gauge
March I5, I9O. Mild sulphur water .................... 221 -318
MERRITTS ISLAND.
From the well records obtained in this locality it is probable that flowing artesian wells can be obtained at any point on Merritts Island. Record of wells are on file from every postoffice on the island bordering the Indian River. Also, records have been
obtained from Artesia, Cape Canaveral Light House, and Canaveral Club House on the peninsula east Of the island, good flows being reported from all of these localities. The pressure of two of the wells on the southern end of the island was obtained, one at Lotus and one at Tropic. The well of L. D. Hancock, i mile south of Lotus has a depth of about 300 feet. The pressure of this well March 12, I9IO, was 16 pounds. The elevation of the well according to barometric readings is I10 feet. This together with a pressure of 16 pounds gives the well a total head of 46.9 feet above the level of the water in Indian River. The following is an analysis ot the water from this well. Analysis made for the State Survey in the office of the State Chemist, A. M. Henry, analyst.