THE ARTESIAN WATER SUPPLY OF EASTERN FLORIDA. 14

Aside f rom the superficial soil and sand the material penetrated at Hastings to a depth of about 170 f eet consists largely of clays although some water bearing sands are reported and a shell straturn at a depth of 6o to 62 feet is, specially mentioned.
At a depth -of 170 to i So f eet a dark colored, very hard stratum occurs. This rock appears f rom the well records to be similar in character to the rock f ound at St. Augustine at a depth of 170 to 180 feet. After passing through this stratum the wells penetrate limestone consisting of alternating hard and soft strata, the flow increasing as each hard stratum is penetrated. This limestone probably representing the Vicksburg group has been penetrated at Has *tings at about 200 feet or to a total depth Of 365 f eet.
Of the many wells at Hastings it is possible to give an individuial record of only a few. The following is a log of the well of F. R. Allen, kindly supplied by the driller, Mr. H. Walker. This is a 6-inch well located 3 miles southeast of town. It was drilled in May, 1908 and is used for irrigating purposes.
Feet.
Yellow clay. ....................................... o -6
Blue clay ............................................. 6- 6o
Shell stratum ........................................ 6o- 64
Clay................................................. 64 -16o
Soft rock........................... ............. .... i6o --165
Clay ................................................ 165 -171
Rock supplying small flow............................. 171 -171T2
Limestone ............................................ 17I2-i83
Shell and limestone.................................... 183 -245
Material not reported................................ 245 -300
The following is a partial log of the well of Henry Bugbee taken f rom the notes kept by 1. C. Peck. This is a f our-inch well dIrilled in 1902 and located two and one-half miles south of Hastings. The well has- a total depth Of 257 feet and is cased 178 f eet. It is used f or irrigating purposes.
Feet.
Surface material, soil and sand ........................... o to 6
Mostly clay, some sand at 32 feet. Material from 38 to 70
feet not reported............................ 6 to 186
Seven feet of very hard rock through which it was possible
to drill only a few inches a day .................... 186 to 193
Porous limestone from which flowing water is obtained ...193 to 208 Soft limestone, flow increasing with depth ................ 208 to 257
HOLY' BRANCH.

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