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Magic Stones and Electric Gems

WHILE the precious and semi-precious stones were often worn as amulets or talismans, the belief in the magic quality of mineral substances was not confined to them, but was also held in regard to large stone masses of peculiar form, or having strange markings or indentations; moreover, many small stones, possessing neither worth nor beauty, were thought to exert a certain magical influence upon natural phenomena. An occult power of this sort was also attributed by tradition to some mythical stones, the origin of this fancy being frequently explicable by the quality really inherent in some known mineral bearing a designation closely similar to that bestowed upon the imaginary stone.

To certain stones has been attributed the power to produce musical tones, the most famous example being the so-called "Vocal Memnon" of Thebes. This colossal statue was said to emit a melodious sound when the sun rose, and according to Greek legend this sound was a greeting given by Memnon to his mother, the Dawn. It appears, however, that the statue was a respecter of persons, for when the Emperor Hadrian presented himself before it, he is said to have heard the sound three times, whereas common mortals heard it but once, or at most twice, while occasionally the statue withheld its greeting altogether. A modern traveller relates a personal experience that may cast a side-light upon this matter. His visit to Thebes was made in the evening, but a fellah who was standing near the statue asked him whether he wished to hear the musical sound. Of course the reply was in the affirmative. Thereupon the man climbed up the side of the colossal figure and hid himself behind the elbow. In a moment sharp metallic sounds became audible; not a single sound, but several in succession. Knowing from their quality that they could not proceed from the stone, the traveller asked his donkey-boy for an explanation and was told that the man was striking an iron bar. In ancient times the priests probably performed this or a similar trick in a much more skilful way than did the poor fellah, so that the mystery of the statue was carefully guarded.

The river Hydaspes was said to furnish a "musical stone." When the moon was waxing, this stone gave forth a melodious sound. This should be understood in the sense that when the stone was struck at that season the sound was different from what it was at other times--a fanciful idea based on some supposed sympathy between the stone and the moon. As moonstones are rarely larger than a silver dollar, they would not emit a sound upon being struck, and it is probably a rock known as "chinkstone" (phonolite) that is referred to, an igneous rock, very hard and resonant, that has been found in elongated and flat pebbles of large size; they ring with the resonance of bells when struck. A sonorous stone at Megara is reported by Pausanias; when struck, it emitted the sound of the chord of a lyre. This was explained by the tale that, while helping Alcathous to build the walls of his city, the god Apollo had rested his lyre on the stone.

The term sarcophagus is to us so clear and precise in its significance, that we do not stop to think that its etymology reveals it as literally meaning body-devourer. Tradition taught that a stone of this type was to be found near Assos in Lycia, Asia Minor, and also in some parts of the Orient. If attached to the body of a living person it would eat away the flesh. Another type, already noted by Theophrastus in the third century B.C., had the power of petrifying any object placed within receptacles made from it. If a dead person were buried in a "sarcophagus" of this material the body would not be consumed, but would, on the contrary, be turned to stone, even the shoes of the corpse and any utensils buried with it, would undergo a like wonderful change. Possibly actual observations of changes in the bodies of those long buried, their partial disintegration in some cases, and their hardening in others, may have given rise to the fancy that the stone receptacle in which they had reposed was directly the cause of this, whether it implied destruction or petrifaction.

Of the substance named galactite, Pliny gives some details. He states that it came from the Nile, was of the color and had the odor of milk, and when moistened and scraped produced a juice resembling milk. The liquid derived from the galactite when taken as a potion by nurses was said to increase the flow of milk. If a galactite were bound to a child's arm the effect was to promote the secretion of saliva. To these favorable effects must be added an unfavorable one, namely, loss of memory, which was said to befall occasionally those who wore the stone. A kind of "emerald with white veinings" was sometimes called galactite, and another variety had alternate red and white stripes or veins. Perhaps this "emerald" was a variety of jade, or a banded jasper.