Five o'clock tea" is a phrase our "rude forefathers," even of the last generation, would scarcely have understood, so completelyis it a thing of to-day; and yet, so rapid is the March of the Mind, it has already risen into a national institution, and rivals, in its universal application to all ranks and ages, and as a specific for "all the ills that flesh is heir to," the glorious Magna Charta.