...d Petersburgh Railroads, Va.--A body of rebels crossed the Cumberland River at Fishing Creek and Hartford, Ky., but were driven back by the National troops after a brief skirmish.--An expedition from Germantown, Miss. , under Colonel McCrellis, attacked a rebel force at Senatobia, and drove them south of the Tallahatchie River, with a loss of six killed and three wounded of their number. Colonel J. T. Wi...