“While staying at the Moru-amo Lhaga, seated one afternoon in the Zug-kang with Pezu Lama, who on account of his great age went by the simple name of Goppoo (which means — old man), he suddenly stopped talking and held himself as if to listen—then from the breast of his tin-lo (robe) withdrew a small metal cylinder-shaped article about 8" in length by 2" in diameter, from one end of which he removed a cover, and held the open end to his ear for a moment, then reversed it and opened the other end, into which he spoke a sentence or two in a whispering voice, after which he closed the instrument and returned it to his robe. On seeing my astonishment and curiosity that I could not hide — he calmly informed me that he was talking to his young brother who was a lama away north in the Tzagan Ora Mountains, over 200 miles from Moru-amo. I felt so confused on hearing this, that the only remark I could manage to think of was to ask him what might be the age of his young brother? ‘Oh!’ he replied in a slighting manner, ‘he is not 120 as yet.’ I thought it best not to ask any more questions, but during the months of my convalescence with the Dzurmo, I mentioned this matter. He smilingly informed me that it was a simple little convenience called the L'en sang-wa (or secret messenger) at one time extensively in use with the ancient Gyal-Dzom. The little instruments were made in pairs only, and by some process—en rapport—with each other in such a manner that certain very delicate vibratory action was set up by the voice on the fine tissues of the other. An instrument was no use without its particular pair. The chemical from which the tissues were prepared was of some kind of composite mineral, and vegetable extraction, the secret of which was jealously guarded by the ancient Gyal-Dzom, but it appears that the secret leaked out and seems to have filtered down the ages, but still carefully guarded by a few of the elect. I learned later that the tissues of the instruments deteriorated after a certain time, but could always be renewed by chemical treatment. Here again is interesting work for research.”
“Approaching one of the lights, I found that it was but a lump of common stone-crystal about 4" in diameter placed on a plate of some kind of metal, grey in colour, about half an inch thick and one foot in diameter, all of which was hung by bronze wire loops from an arm at right angles from a wooden upright. Over and around the plate ran an ornamental tracing in thin lines of gold hieroglyphics resembling the characters on the cave writings. Needless to say, I was keen to get an explanation...”
“The Che-sho willingly informed me that the sound of the gong penetrated the metal plate from which a vibrating force emanated, that had the effect of infusing to the crystal particles a bright luminous glow that gradually grew to a certain intensity in accordance with the volume of vibratory sound. If the gong was struck with a metal hammer, the glow would be so great that the human eye could not stand it without a head covering of thick cloth—and still neither the crystal or plate had a particle of heat.
“Che-sho said that he had no knowledge of what kind of metal the plate or the gong was made of, as they were received in his Monastery hundreds of years ago. He could not say from where or from whom; but personally, I have no doubt that it is another of the ancient Gyal-Dzom's scientific secrets.”