WE have evidence of the use of crystal balls as means of divination in medieval times, and “scrying” in some of its many forms was by no means rare in the Greek and Roman periods. The essential requisite for the exercise of this species of divination is a polished surface of some sort upon which the scryer shall gaze intently; for this purpose mirrors, globules of lead or quicksilver, polished steel, the surface of water, and even pools of ink, have been employed and have been found to insure quite as satisfactory results as the crystal ball. The points of light reflected from the polished surface (points de repère) serve to attract the attention of the gazer and to fix the eye until, gradually, the optic nerve becomes so fatigued that it finally ceases to transmit to the sensorium the impression made from without and begins to respond to the reflex action proceeding from the brain of the gazer. In this way the impression received from within is apparently projected and seems to come from without. It is easy to understand that the results must vary according to the idiosyncrasy of the various scryers; for everything depends upon the sensitiveness of the optic nerve. In many cases the effect of prolonged gazing upon the brilliant surface will simply produce a loss of sight, the optic nerve will be temporarily paralyzed and will as little respond to stimulation from within as from without; in other cases, however, the nerve will be only deadened as regards external impressions, while retaining sufficient activity to react against a stimulus from the brain centres. It is almost invariably stated that, prior to the appearance of the desired visions, the crystal seems to disappear and a mist rises before the gazer’s eye.
ROCK-CRYSTAL BALL PENETRATED BY CRYSTALS OF RUTILE. MADAGASCAR.
The Achaians, as Pausanius relates, frequently used a mirror to divine diseases or to learn whether there was danger of sudden death. Of the Temple of Demeter, or Ceres, at Patras, he writes:[266]
In front of the temple of Demeter there is a well. A stone wall separates this well from the temple, but steps lead down to it from the outside. Here there is an infallible oracle, although it does not answer all questions, but only those touching diseases. They attach a slender cord to a mirror and let it down into the well, balancing it carefully so that the water does not cover the face, but only touches the rim. Then, after making a prayer to the goddess and burning incense to her, they look into the mirror, and it shows whether the sick person will die or recover. Such is the power of truth in this water.
This sacred well with its oracle of the magic mirror must have been in Lucian’s mind when, in his description of the palace of the Moon-King, he says:[267]
Another wonderful thing I saw in the palace. Suspended over a rather shallow well there is a large mirror, and anyone who goes down into this well will hear every word that is spoken on earth, while, if he gazes on the mirror, he will see there every city and every nation just as clearly as though he were looking down upon them from a slight elevation. At the time I was there, I saw my native country and its inhabitants. Whether I myself was seen by them in turn, I am not sure.
Lucian adds, with a fine touch of irony, “Anyone who doubts this assertion needs only to go there himself and he will find out that I speak the truth.” As no one has yet made a trip to the moon, the assertion is still uncontradicted.
In their religious legends the ancient Mexicans taught that their god Tezcatlipuco had a magic mirror in which he saw everything that happened in the world.[268] He was sometimes named Necocyautl, “sower of discord,” because he often stirred up war and strife among men, but he was also lord of riches and prosperity, which he bestowed and took away again at his will. To the influence of this divinity were attributed many omens and certain strange visions, announced by repeated knockings.[269]