THE ARTESIAN WATER SUPPLY OF EASTERN FLORIDA.

Fuller.* -It is possible that some of the small local flows obtained in the lake region of interior Florida are due to similar conditions.
Fig. 8.-Illustrating artesian water from unconfined horizontal
beds. The pressure in this case is due to the friction of water moving
through the pores of the rock.
ARTESIAN WATER FROM SOLUTION PASSAGES.
Solution passages through limestones undoubtedly facilitate the free movement of water. 'If limestones should be otherwise relatively water tight flows might still be obtained in sQme instances from water conducted through the cavities in the limestone. Such possible conditions are illustrated by the accompanying sketch also taken from Mr. Fuller's paper.* Several other possible structural conditions that may give rise to artesian flows are described and illustrated in the paper referred to. Those illustrated above, however, include the structural conditions which seem likely to prevail in Florida.
Fig. 9.-Sketch illustrating artesian flow obtained from solution
passages in the limestone. After Fuller.
SOURCE OF ARTESIAN WATER OF FLORIDA.
The idea is rather prevalent that the artesian waters of Florida are in no sense local but are derived from the Appalachian Mountains or some other remote inland point. This is an error which if not corrected may prove detrimental. That the supply is local is evidenced by the fact that the artesian wells of the State are affected by local rains. 'Many of the well owners have recog*U. S. Geological Survey, Bull. 319, p. 39, 1908. Summary of the Controlling Factors of Artesian Flows.

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