Familiarity has now somewhat dulled the effect of the gliding entrance of the ghostly Louis, which at first seemed almost supernatural. The art was in making the figure rise as it advanced, and an ingenious contrivance was devised by one of the stage foremen. It was a curious feeling to find oneself in the cavernous regions below the stage, and see the manager rush down and hurriedly place himself on the trap to be worked slowly upwards.[24]

The use of intense light has favoured the introduction of new effects in the shape of transparent scenery; that is, of a scene that looks like any ordinary one, but is painted on a thick gauzy material. Thus, in the first act, the back of the scene in the Corsican Palace is of this material, through which the tableau of the Paris duel is shown, a fierce light being cast upon it. In the original representation the whole wall descended and revealed the scene. The upper half ascending, the other offers something of a magic-lantern or phantasmagorian air. The same material is used in the dream in ‘The Bells,’ when the spectral trial is seen going on, made mysterious and misty by the interposition of this gauze.

Sir Henry Irving--A record of over Twenty Years at the Lyceum — Part 58

In the duel scene one of the swords is broken by an accident; the other combatant breaks his across his knee, that the duel may proceed “on equal terms.” It is not, of course, to be supposed that a sword is broken every night. They are made with a slight rivet and a little solder, the fitting being done every morning, so that the pieces are easily parted. But few note how artfully the performers change their weapons; for in the early stages of the duel the flourishings and passes would have soon caused the fragments to separate. It is done during the intervals of rest, when the combatants lean on the seconds and gather strength for the second “round,” and one gets his new weapon from behind a tree, the other from behind a prostrate log.

Sir Henry Irving--A record of over Twenty Years at the Lyceum — Part 58