112 FLORIDA GEOLOGICAL SURVEY-I3TH ANNUAL REPORT

this region reach the ocean by open channels. There are several small creeks and branches among the hills, but as far as known they all flbw into sinks, or disappear in the sand at or near the edge of the surrounding lime-sink region. (This phenomenon recalls conditions in the arid regions of the southwestern United States, where there are many wvell-watered mountain ranges surrounded by deserts xhich no streams cross.) The permanent ground-water level is in most places far below the surface. A well about 40 feet










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 Fig. 15. Looking north up hill about 75 feet high, on road from Brooksille to Blanton, about a mile south of Spring Lake, Hernando County. The most conspicuous trees are short-leaf pine (Pinus Tacda), and sweet gum. March 9, 1915.