. A guide to Florida . diseases. Springs of salt water arenot uncommon in the interior. Scientists say that the geological formation of Florida isof comparatively recent origin. The opinion of one ofthem, relative to the peninsula, is expressed in this lan-guage : The whole peninsula has been formed by thesuccessive growth of coral reefs added concentrically from GUIDE TO FLORIDA. North to South to the first deposits, while the accumula-tion between these reefs has been a mixture of coral andfragments of shells, the coral prevailing in some parts, asin the regions of the Everglades, and in oth
. A guide to Florida . diseases. Springs of salt water arenot uncommon in the interior. Scientists say that the geological formation of Florida isof comparatively recent origin. The opinion of one ofthem, relative to the peninsula, is expressed in this lan-guage : The whole peninsula has been formed by thesuccessive growth of coral reefs added concentrically from GUIDE TO FLORIDA. North to South to the first deposits, while the accumula-tion between these reefs has been a mixture of coral andfragments of shells, the coral prevailing in some parts, asin the regions of the Everglades, and in other portions,especially the Northern and Eastern, the shell. Agassizassumes, of the lower half of the peninsula, that if thegrowth be one foot in a century from a depth of seventy-five feet, and that each successive reef has added ten milesof extent southward, it would have required, on this com-putation, 135,000 years to have formed the southern halfof the peninsula. The upper part of Florida is, of course,much E»rpQi fiige. •^%njtpa Tree. lo GUIDE TO FLORIDA, Florida undoubtedly possesses the most equable andsalubrious climate, all the year round, of any State in theUnion. The thermometer seldom rises above 90° in thesummer, nor falls below 30° in the winter. The summermay be said to be seven months long, but the heat is notintense. This is attributable in a great degree to thecircumstance that the peninsula is fanned on the East bythe Atlantic breezes, and on the West by those of theGulf of Mexico, both of which can be sensibly felt in themiddle of the State. The winter in Florida resembles very much the seasonknown in more northern latitudes as the Indian climate of Florida, however, has the additional ad-vantage of being more dry and elastic. Rain falls rarelyduring the winter months. Five out of six days are brightand cloudless, and of the most agreeable temperature. InSouthern Florida frost very rarely appears. Even as farnorth as the Suwanee River
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