Round-about Rambles in Lands of Fact and Fancy. Frank Richard Stockton
and have a grand hunt.
Suppose it is snowing, what will you care? You will not mind the snow any more than if it were a shower of blossoms from the apple-trees in May.
TRICKS OF LIGHT.
There is nothing more straightforward in its ways than light—when we let it alone. But, like many of us, when it is introduced to the inventions and contrivances of the civilized world, it often becomes exceedingly fond of vagaries and extravagances.
Of all the companions of light which endeavor to induce it to forsake its former simple habits, there is not one which has the influence possessed by glass. When light and glass get together it is difficult to divine what tricks they are going to perform. But some of these are very interesting, if they are a little wild, and there are very few of us who do not enjoy them.
For instance, what a delight to any company, be it composed of young folks or old, is a magic-lantern! The most beautiful and the most absurd pictures may be made to appear upon the wall or screen. But there is an instrument, called the phantasmagoria, which is really nothing but an improved magic-lantern, which is capable of producing much more striking effects. It is a much larger instrument than the other, and when it is exhibited a screen is placed between it and the spectators, so that they do not see how the pictures are produced. It is mounted on castors, so that at times it can be brought nearer and nearer to the screen, until the picture seems to enlarge and grow in a wonderful manner. Then, when it is drawn back, the image diminishes and recedes far into the distance. The lenses and other mechanism of the phantasmagoria can also be moved in various directions, making the action of the pictures still more wonderful. Sometimes, when the instrument is exhibited in public, the screen is not used, but the pictures are thrown upon a cloud of smoke, which is itself almost invisible in the dim light of the room. In such a case the figures seem as if they were floating in the air.
A man, named Robertson, once gave exhibitions in Paris, in an old chapel, and at the close of his performances he generally caused a great skeleton figure of Death to appear among the pillars and arches. Many of the audience were often nearly scared to death by this apparition. The more ignorant people of Paris who attended these exhibitions, could not be persuaded, when they saw men, women, and animals walking about in the air between the arches of the chapel, that Robertson was not a magician, although he explained to them that the images were nothing but the effect of a lantern and some glass lenses. When these people could see that the figures were produced on a volume of smoke, they were still more astonished and awed, for they thought that the spirits arose from the fire which caused the smoke.
But Robertson had still other means of exhibiting the tricks of light. Opposite is a picture of the "Dance of Demons."
This delusion is very simple indeed, and is produced by placing a card-figure on a screen, and throwing shadows from this upon another screen, by means of several lights, held by assistants. Thus each light throws its own shadow, and if the candles are moved up and down, and about, the shadows will dance, jump over each other, and do all sorts of wonderful things. Robertson, and other public exhibitors, had quite complicated arrangements of this kind, but they all acted on the same principle. But all of those who exhibit to the public the freaks of light are not as honest as Mr. Robertson. You may have heard of Nostradamus, who also lived in Paris, but long before Robertson, and who pretended to be a magician. Among other things, he asserted that he could show people pictures of their future husbands or wives. Marie de Medicis, a celebrated princess of the time, came to him on this sensible errand, and he, being very anxious to please her, showed her, in a looking-glass, the reflected image of Henry of Navarre, sitting upon the throne of France. This, of course, astonished the princess very much, but it need not astonish us, if we carefully examine the picture of that conjuring scene.
The mirror into which the lady was to look, was in a room adjoining that in which Henry was sitting on the throne. It was placed at such an angle that her face would not be reflected in it, but an aperture in the wall allowed the figure of Henry to be reflected from a looking-glass, hung near the ceiling, down upon the "magic" mirror. So, of course, she saw his picture there, and believed entirely in the old humbug, Nostradamus.
But there are much simpler methods by which the vagaries of light may be made amusing, and among the best of these are what are called "Chinese shadows." These require a little ingenuity, but they are certainly simple enough. They consist of nothing but a card or paper, upon which the lights of the picture intended to be represented are cut out. When this is held between a candle and a wall, a startling shadow-image may be produced, which one would not imagine to have any connection with the card, unless he had studied the manner in which said card was cut. Here is a picture of a company amusing themselves with these cards. No one would suppose that the card which the young man is holding in his hand bore the least resemblance to a lion's head, but there is no mistaking the shadow on the wall.
The most wonderful public exhibitions of optical illusions have been those in which a real ghost or spectre apparently moves across the stage of a theatre. This has frequently been done in late years, both in this country and Europe. The audiences were perfectly amazed to see a spirit suddenly appear, walk about the stage, and act like a regular ghost, who did not seem to be in the least disturbed when an actor fired a pistol at him, or ran him through with a sword. The method of producing this illusion is well shown in the accompanying picture. A large plate of glass is placed in front of the stage so that the audience does not perceive it. The edges of it must be concealed by curtains, which are not shown in the picture. An actor, dressed as a ghost, walks in front of the stage below its level, where he is not seen by the audience, and a strong electric light being thrown upon him, his reflected image appears to the spectator as if it were walking about on the stage. When the light is put out of course the spirit instantly vanishes.
A very amusing account is given of a man who was hired to do some work about a theatre. He had finished his work for the present, and wishing to eat his supper, which he had brought with him, he chose a nice quiet place under the stage, where he thought he would not be disturbed. Not knowing that everything was prepared for the appearance of a ghost, he sat down in front of the electric lamp, and as soon as it was lighted the audience was amazed to see, sitting very comfortably in the air above the stage, a man in his shirt-sleeves, eating bread and cheese! Little did he think, when he heard the audience roaring with laughter, that they were laughing at his ghost!
Light plays so many tricks with our eyes and senses that it is possible to narrate but a few of them here. But those that I have mentioned are enough to show us what a wild fellow he is, especially where he and glass get frolicking together.
SAVING