...of guerrillas, under the chief White, of Loudon County, Va., made a raid into Langley, six miles above Georgetown, D. C., driving in the pickets, without any casualty.--Colonel Cloud, in a message to General Blunt , dated at Fort Smith, Ark., said he had just returned from a raid in the Arkansas Valley. Near Dardanelles he was joined by three hundred mounted Feds, as the Union Arkansians are called, and with...