...ehead, City to Beaufort or back again, the Colonel gives them a shot. We regret to learn that even in this beleaguered host some traitors were to be found, as there was at least one serpent in Eden .--Some few men, it is said, from Capt. Pool's company, contrived to desert to the enemy. It is not probable that they can communicate any information likely to be of value to the enemy, as of cours...