...ptain T. A. Craven, was cruising for slave-ships in the vicinity of the Florida Keys and the coast of Cuba; and at about the time of Mr. Lincoln's election, Captain (afterward Quartermaster-General) M. C. Meigs arrived, to take charge of the works at the Tortugas. He went by land, and was satisfied from what he heard on the way that an attempt would be made by the secessionists to seize the forts at the K...