101. 102. The Dircksian Phantasmagoria.
103. 104. The Dircksian Phantasmagoria.
The arrangement of the apparatus will be understood by reference to Figs. 101-104, in which—
Fig. 101 is an external perspective view, Fig. 102 a vertical section, Fig. 103 a top, or bird’s-eye view, and Fig. 104 a plan. A, B, C, D, E is a box, closed on all sides, but provided at D with a door F, and on the other side with another door G, both hinged to the back A, D. H, I, J are flapped openings on the top of the box; K, K a partition dividing the interior of the box, made of a good, clear, and even surface of thin patent plate-glass, kept in its place within two side grooves; L, M, two separate chambers or compartments produced by K, K, the transparent mirror; N, a ceiling or screen over the compartment L, to exclude any object therein from the direct view of the spectator, as shown by the dotted line, a, b.
If two figures be now introduced, one Y, the other Z, and the eye of the spectator be fixed at A, he will observe two images, one the real figure Z, the other Y’, the mere reflection of Y. By this arrangement it is evident that the plain, unsilvered glass, thus viewed at an angle of about 45° has all the properties of a mirror, but owing to its transparency two figures are seen, possessing little or no distinguishable difference between them. Of course a person placed at Z sees only the figure Y, but, as a piece of acting may, under proper arrangements of a suitable stage, approach the situation apparently occupied by Y’, and thus indicate to a spectator placed at A any pre-arranged dramatic scene requiring Z to be in correspondence with the visionary figure Y’.
In using the apparatus the flap H must be open, but I may be shut, being mostly useful to get admission for inserting or withdrawing the screen or the figures; the flap J may be closed or opened to regulate the admission or exclusion of light. The doors F, G may both be wide open, though one is generally sufficient, provided it is turned as direct as possible to the light. A mirror placed at an angle close to the opening F or G, will assist the illusion by illuminating the figure Y, thus heightening the effect of the reflection Y’.
If two geometrically proportionate figures, as spheres, cubes, or the like, be placed in the situations Y, Y’, then the image at Y’ will be a vision and a substance combined, as will at once appear by slightly moving the substantial body in either compartment L or M. Let the duplicate figure be a box, and then the spectator might observe the apparent anomaly of the same box being opened and a substance taken from it and replaced either by a substantial or visionary actor. When the compartment M is lighted up no vision appears, but the light being made gradually to fade and disappear, the vision would seem lifelike, as at first. As it is evident that the right hand of the vision is the left hand of the actor in the compartment L, all his acts requiring the right would have to be performed with the left hand, to appear natural to the spectator. It is also requisite for insuring a good effect, that no solid figure in the compartment M shall come before or behind the visionary image, as its transparency would at once become evident; but if anything of the kind is desired, then the background, figure, or object, should be placed behind the actor Y, and become with him also visionary; in this way a white screen placed behind the actor Y will allow his shadow to appear on it and give great force and solidity to his reflected figure or vision at Y’.
A few examples will better illustrate than any elaborate description, the singular effects that may, in different ways, be adopted for realising spectral dramas.
1.—Dickens’s Haunted Man.
A student is seen sitting at a table spread over with books, papers, and instruments. After a while he rises and walks about the chamber. In this there is nothing remarkable. But the audience is perplexed by a different circumstance: they not only see a man rise from his seat and see him walking about, but they also see that he still sits immovably in his chair—so that evidently there are two persons instead of one, for, although alike in dress, stature, and person, their actions are different. They cross and recross; they alternately take the same seat; while one reads the other is perhaps walking; and yet they appear very sullen and sulky, for they take no notice of each other, until one, after pushing down a pile of books, passes off by walking through the furniture and walls.