NATURAL DIVISIONS. Tampa, Charlotte Harbor, and Key West. 19 The latter is one of the most important naval stations of the republic, owing to its commanding situation at the entrance of the most frequented passage into the Gulf of Mexico. The chief rivers are the St. John's, which furnishes nearly 1,000 miles of water navigation; the Indian River, a long, nar- row lagoon on the eastern coast; the Ocklawaha, the AppP: 1^ -~ ~'~ "--------' - A HAMMOOK. lachicola, the Ocklockonnee, the Perdido, the Suwanee, and the St. Mary's. The Withlacoochee, which discharges