From Florida.
--he Lake City Columbian has reliable information that a Federal gunboat ascended the St. John's river on the 19th, a considerable distance above Pulaski, and captured the steamer Sumter. The informant did not know whether the crew were captured or whether the steamer was loaded. The Sumter has been taken to Palatka. The same gunboat had gone up the river again to search for the steamer Hattle, but the mission will be fruitless. The enemy, between 1,500 and 2,500 strong, are quietly rendezvousing at Palatka. No fortifications have been erected there. The Yankees desire, by feints, to cause Gen. Anderson to withdraw a portion of his forces from their present position — than the Yanks will have a better chance to advance.