FERS OF. These words, “marque” and “reprisal,” are frequently used a8 synonymous, but, taken in their strict etymological sense, the latter signifies a “taking in re turn ;” the former, the passing the frontiers (marches) in order to such taking. Letters of marque and reprisal are grantable, by the law of nations, whenever the subjects of one state are oppressed and injured by those of another, and justice is denied by that state to which the oppressor belongs; and the party to whom these letters are granted may then seize the bodies or the goods of the subjects of the state to which the offender belongs, until satisfaction be made, wherever they happen to be found. Reprisals are to be granted only in case of a clear and open denial of justice. At the present day, in consequence partly of trenties and partly of the practice of nations, the making of reprisals is confined to the seizure of commercial property on the high seas by public cruisers, or by private cruisers specially authorized thereto. Brown.