272 FLORIDA GEOLOGICAL SURVEY-THIRD ANNUAL REPORT.
LARGE SHALLOW PERMANENT LAKES.
(FIG.24)
Outside of the lake region, especially in the flatwoods of East and South Florida, and particularly in Bradford, Alachua, Brevard and Osceola Counties, are many large irregular lakes which although permanent must be comparatively shallow (judging from the flatness of the country around them). Examples of this class are Lake Butler, Sampson's Lake, Santa Fe Lake, Lakes Tohopekaliga and East Tohopekaliga, and probably Lakes Kissimmee, Istokpoga and Okeechobee, which I have not seen. None of these

Fig. 24.-Looking north across Lake Butler (Bradford County), from
near the edge of the town of the same name. The trees are Taxodium
imbricarium (pond cypress). May 27, 1909.
have been studied sufficiently to be described here, but they are not believed to be very important as sources of peat. An analysis of peat from near East Tohopekaliga Lake (which, however, has been tampered with considerably) will be found in the table under locality no. I I.