.Nat Robbery.-We learn from the Huntsville, (AIabama) Democrat, that on ,he 18th ut. the way mail from that place to Natchez, was stolen from the boot of the Stage, robbed of all the letters and money, and the bags with their remaining con- tents thrown in well in the suburbs of Huntsville, where they were found the next day. Many of the letters that were contained in a cloth bag, were found on Monday broken open, in the woods, about a mile from town. The exact amount of money is unknown--one letter from Mossrs Yeatman & Kent, to a gentleman in MooresyiIle, contained S530. A reward of sl5e has been offered by the Post Mas ter, at that place, for the detection of the TooIes