...ial circumstances could not in advance be known, and of course could not be stated in a notice. Under this authority, delegated to Gen. Cadwalader, a case occurred — that of John Merryman, of Maryland --in which that officer refused to obey such a writ issued by the Chief-Justice of the United States. That high officer has since filed his opinion, and has, it is said, caused a copy of the same, w...