In this materialistic age, actors even resort to blandishments of costume to give their parts a special emphasis. Our leading ladies are more richly clad than the minor members of their companies. Even the great Mansfield resorted in his performance of Brutus to the indefensible expedient of changing his costume act by act and dressing always in exquisite and subtle colors, while the other Romans, Cassius included, wore the same togas of unaffected white throughout the play. This was a fault in emphasis. A novel and interesting device of emphasis in stage-direction was introduced by Mr. Forbes-Robertson in his production of _The Passing of the Third Floor Back_. This dramatic parable by Mr. Jerome K. Jerome deals with the moral regeneration of eleven people, who are living in a Bloomsbury boarding-house, through the personal influence of a Passer-by, who is the Spirit of Love incarnate; and this effect is accomplished in a succession of dialogues, in which the Stranger talks at length with one boarder after another. It is necessary, for reasons of reality, that in each of the dialogues the Passer-by and his interlocutor should be seated at their ease. It is also necessary, for reasons of effectiveness in presentation, that the faces of both parties to the conversation should be kept clearly visible to the audience. In actual life, the two people would most naturally sit before a fire; but if a fireplace should be set in either the right or the left wall of the stage and two actors should be seated in front of it, the face of one of them would be obscured from the audience. The producer therefore adopted the expedient of imagining a fireplace in the fourth wall of the room,--the wall that is supposed to stretch across the stage at the line of the footlights. A red-glow from the central lamps of the string of footlights was cast up over a brass railing such as usually bounds a hearth, and behind this, far forward in the direct centre of the stage, two chairs were drawn up for the use of the actors. The right wall showed a window opening on the street, the rear wall a door opening on an entrance hall, and the left wall a door opening on a room adjacent; and in none of these could the fireplace have been logically set. The unusual device of stage-direction, therefore, contributed to the verisimilitude of the set as well as to the convenience of the action. The experiment was successful for the purposes of this particular piece; it did not seem to disrupt the attention of the audience; and the question, therefore, is suggested whether it might not, in many other plays, be advantageous to make imaginary use of the invisible fourth wall. VII THE FOUR LEADING TYPES OF DRAMA I. TRAGEDY AND MELODRAMA