In the firm expectation that when London shall be a habitation of bitterns, when St. Paul and Westminster Abbey shall stand shapeless and nameless ruins in the midst of an unpeopled marsh, when the piers of Waterloo Bridge shall become the nuclei of islets of reeds and osiers, and cast the jagged shadows of their broken arches on the solitary stream, some Transatlantic commentator will be weighing in the scales of some new and now unimagined system of criticism the respective merits of the Bells and the Fudges and their historians.