...re incapable of keeping the Federal gun-boats out of the sounds, and that the Neuse and Pamlico Rivers must fall into our hands, they determined to fortify Roanoke Island and prevent our getting into Albemarle Sound ; so that they could hold communication with Norfolk through the Currituck Inlet and save Plymouth and the Roanoke River. They were building some heavy iron-clads up that river, and all the material...