20 FLORIDA. its waters into the Gulf, is an important stream, as are also Peace Creek, which falls into Charlotte Harbor, and the Caloosahatchie, south. Kissimn lakes with Lake The surface elevation being and this being are classified a swamp, and pin which empties into the nee River, connecting sev Okechobee, is also a nav of the State is generally but littlenmomthan 500 attained in only a few es ie. Gulf still farther eral of the smaller igable stream. level, the greatest feet above the sea, places. The lands high-hammock, low-hammock, savanna, The hammocks vary from a few acres to thousands of acres in extent, and are found in of the peninsula. growth of red, liv ory, and dogwood They are usually e, and water oak, and when cleared almost inexhaustible fertility. vial tracts on the margins of areas, yielding largely, but r, in ordinary seasons. Except generally sandy and apt to b the surface of the interior, The s streams quiring in the e poor. covered with magnolia, gu I they afford avannas are r , or lying in all parts a dense m, hick- a soil of ich allu- letached ditching and diking hammocks, the soil is Numerous lakes dot the largest being Lake Oke- chobee, which is said to cover an area of more than 650 square miles. Perhaps the most remarkable geographical feature of the State is the immense tract of marsh or lake filled with islands, in the southern part of the peninsula, called the Everglades b the ndn "-water"). It is about 60 miles long by 60 broad, covering most of the territory south of Lake Okechobee, and is impassable dur- ing the rainy reason, from July to October. The islands with which its surface is studded vary from one fourth of an acre to hundreds of acres in extent, and are usually entangled in dense thickets of shrubbery or vines. The water of the lake is from one to six feet deep, and the bot- tom is covered with a growth of rank grass which, rising abova the surface, gives it the deceptive appearance of a boundless prairie. Another noteworthy feature of Florida I