LGte 0r'iUol.-Fsy Monday mights mail. 27th inst.. we received the National Intelligencer of te 25h o August, making thi'ty-three days from Washington to Litch6eId UeualIy travelled three or four daye.- Where it had been all this time perhaps of Mir. Van Burens "rascaIly pOstmasters" can tell. By the mail came the National Journal and U. s. Tee. graph of the 24th inst.