"Is that her name?"
"Her name!" replied the echo.
"I thought so!" And Philip laughed again, while the echo laughed wildly in answer. "Just the sort of name to suit a Norwegian nymph or goddess. Thelma is quaint and appropriate, and as far as I can remember there's no rhyme to it in the English language. Thelma!" And he lingered on the pronunciation of the strange word with a curious sensation of pleasure. "There is something mysteriously suggestive about the sound of it; like a chord of music played softly in the distance. Now, can I get through this door, I wonder?"
He pushed it gently. It yielded very slightly, and he tried again and yet again. Finally, he put down the lamp and set his shoulder against the wooden barrier with all his force. A dull creaking sound rewarded his efforts, and inch by inch the huge door opened into what at first appeared immeasurable darkness. Holding up the light he looked in, and uttered a smothered exclamation. A sudden gust of wind rushed from the sea through the passage and extinguished the lamp, leaving him in profound gloom. Nothing daunted he sought his fusee case; there was just one left in it. This he hastily struck, and shielding the glow carefully with one hand, relit his lamp, and stepped boldly into the mysterious grotto.
The murmur of the wind and waves, like spirit-voices in unison, followed him as he entered. He found himself in a spacious winding corridor, that had evidently been hollowed out in the rocks and fashioned by human hands. Its construction was after the ancient Gothic method; but the wonder of the place consisted in the walls, which were entirely covered with shells,—shells of every shape and hue,—some delicate as rose-leaves, some rough and prickly, others polished as ivory, some gleaming with a thousand irridescent colors, others pure white as the foam on high billows. Many of them were turned artistically in such a position as to show their inner sides glistening with soft tints like the shades of fine silk or satin,—others glittered with the opaline sheen of mother-o'-pearl. All were arranged in exquisite patterns, evidently copied from fixed mathematical designs,—there were stars, crescents, roses, sunflowers, hearts, crossed daggers, ships and implements of war, all faithfully depicted with extraordinary neatness and care, as though each particular emblem had served some special purpose.
Sir Philip walked along very slowly, delighted with his discovery, and,—pausing to examine each panel as he passed,—amused himself with speculations as to the meaning of this beautiful cavern, so fancifully yet skillfully decorated.
"Some old place of worship, I suppose," he thought. "There must be many such hidden in different parts of Norway. It has nothing to do with the Christian faith, for among all these devices I don't perceive a single cross."
He was right. There were no crosses; but there were many designs of the sun—the sun rising, the sun setting, the sun in full glory, with all his rays embroidered round him in tiny shells, some of them no bigger than a pin's head. "What a waste of time and labor," he mused. "Who would undertake such a thing nowadays? Fancy the patience and delicacy of finger required to fit all these shells in their places! and they are embedded in strong mortar too, as if the work were meant to be indestructible."
Full of pleased interest, he pursued his way, winding in and out through different arches, all more or less richly ornamented, till he came to a tall, round column, which seemingly supported the whole gallery, for all the arches converged towards it. It was garlanded from top to bottom with their roses and their leaves, all worked in pink and lilac shells, interspersed with small pieces of shining amber and polished malachite. The flicker of the lamp he carried, made it glisten like a mass of jewel-work, and, absorbed in his close examination of this unique specimen of ancient art, Sir Philip did not at once perceive that another light beside his own glimmered from out the furthest archway a little beyond him,—an opening that led into some recess he had not as yet explored. A peculiar lustre sparkling on one side of the shell-work however, at last attracted his attention, and, glancing up quickly, he saw, to his surprise, the reflection of a strange radiance, rosily tinted and brilliant.
Turning in its direction, he paused, irresolute. Could there be some one living in that furthest chamber to which the long passage he had followed evidently led? some one who would perhaps resent his intrusion as an impertinence? some eccentric artist or hermit who had made the cave his home? Or was it perhaps a refuge for smugglers? He listened anxiously. There was no sound. He waited a minute or two, then boldly advanced, determined to solve the mystery.