THE ARTESIAN WATER SUPPLY OF EASTERN FLORIDA.

tal depth of 550 feet. The well is 12 inches in diameter for 354 feet; 9 inches for 17 feet; and four inches for 179 feet. It is
reported cased to a depth of Ioo feet. The head of the water is given as 33 feet above the surface or about 38 feet above sea level. The flow of the well when first drilled in 1897 was 2,396,000 gallons per day, (1664 gallons per minute).
Well No. 2 is a IO inch well and has a total depth of 500 feet. It is cased about 140 feet. The head of the water is the same as well No. i or about 38 feet above sea. The total flow of this well
is not recorded. This well was drilled in 1903 by Mr. Horace Walker.
The water system at St.-Augustine is now owned by the city. Formerly the city was supplied by five artesian wells, the system then being under private ownership. These wells were located in various parts of the city. They vary in depth from 2 O to 500 feet and range from 6 to, 8 inches in diameter. The first of these wells was drilled in'1884. They are now in use as private wells.
Several wells have been drilled at St. Augustine to supply water to the Ponce de Leon and other hotels of the Florida East Coast Hotel Company. One of these commonly known as the Ponce de Leon well reached a total depth of 1440 feet and is the deepest well in St. Johns County. The following log of this well has been made up from records kindly supplied by Messrs. MacGuire and McDonald under whose direction the well was drilled, supplemented by a partial set of samples from the boring. The original intention was to go to a depth of about 3000 feet in the expectation of ob training warm water. The well was begun November 27, I886, and drilling continued until February 24 of the following year. Owing to delay caused by the loss of the drill, boring was finally discontinued at the depth of about 1440 feet.
Feet.
Sand. Temperature of the water at 35 feet, 620 F............ o- 35
Sand, with some shell ..................................... 35- 50
B lue clay ................................................. 50- 57
Shell ........................................................ 57- 65
Sand .... .................................................... 65- 76
Indurated clay and sand ................................... 76- 95
Blue clay and black sand, pieces of hard stone. Temperature
of the water 72o at IIO feet, 740 at 170 feet. Head 32 feet above sea. Sulphur water, 50 gallons per minute
at 170 feet........................................ 95- 170
Hard rock. Temperature of water 760 at 177 feet. Flow 350
gallons per minute at I77 feet..........................1I70- 177
Limestone. Flow 1800 gallons per minute at 350 feet .......177- 350
Limestone. Temperature of water 760 at 4I0 feet. Flow of
2o0'2 gallons per minute at 410 feet...........350- 41&

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