He stood there, crouched, for a waiting minute, and then he laughed aloud, for he knew it was only the sound of some piece of falling iron, striking on the cement. To make sure of it, he groped about the floor, and stumbled on the little bar of steel that had fallen. Yet why it had been there, leaning against the door, he could not comprehend. Was it there by accident? Or had it been meant as a signal? It showed him one thing, however; its echoing fall had demonstrated to him that the room he had entered was both higher and larger than the one he had left. It might be nothing more than a furnace-room, yet he told himself that he must be on his guard, that from now on his perils began.

Then he wondered why he should feel this premonitory sense, and in what lay the dividing line, and where lay the difference.

Yet as he stood there, with his back against the wall, he felt something dormant and deep-seated stirring within him. It was not a sense of danger; it arose from no outward and tangible manifestations. But somewhere, and persistently, at the root of his being, he heard that subliminal and submerged voice which could be neither silenced nor understood.

He took three groping paces forward, as if to put distance between himself and this foundationless emotion which some part of him seemed struggling to defy. But for the second time he stood stockstill, weighed down by the feeling of some presence, oppressed by the sense of something vaguely hanging over him. He felt, as Frank had once said, how like a half-articulate key, at the end of an impoverished circuit, consciousness really was; how the spirit so often, in this only half-intelligible life of theirs, flutters feebly with hints and suggestions to which it could never give open and unequivocal utterance. Even language, and language the most artful and finished, was, after all, merely a sort of clumsy Morse—its unwieldy dots and dashes left many a mood of the soul unknown and inarticulate.

As he stood there, in doubt, questioning himself and that vague but disturbing something which stood before him, he decided to put a summary end to the matter. Fumbling in his pocket, and disregarding any risk which the movement might entail, he caught up a match and struck it.

As he shaded the flame and threw it before him, his straining eyes caught only the glimmer of burnished metal—a guard-rail of some description—and the dark and ponderous mass of what seemed a deposit vault.

The match burned down, and dropped from his upthrust fingers. He decided to grope to the rail, and feel along the metal until he reached some point of greater safety. He extended his fingers before him, as a blind man might, and took one shuffling step forward.

Then a thought came to him, with the suddenness and the shock of an electric current, as a radiating tingle of nerves, followed by a strangely sickening sense of hollowness about the chest, swept through his body. Could it be Frank herself in danger, and wanting him?

More than once, in the past, he had felt that mysterious medium, more fluid and unfathomable than electricity itself, carry its vague but vital message in to him. He had felt that call of Soul to Soul, across space, along channels less tangible than Hertzian waves themselves, yet bearing its broken message, which later events had authenticated and still later cross-questioning had doubly verified.

He had felt, at such moments, that there were ghostly and phantasmal wires connecting mind with mind; that across these telepathic wires one anxious spirit could in some way hold dim converse with the other; that the Soul itself had its elusive "wireless," and forever carried and gave out and received its countless messages—if only the fellow-Soul had learned to await the signal and disentangle the dark and runic Code. Yes, he told himself, as he stood there, thoughtfully, as though bound to the spot by some Power not himself,—yes, consciousness was like that little glass tube which electricians called a coherer, and all his vague impressions and mental-gropings were those disorderly, minute fragments of nickel and silver which only leaped into continuity and order under the shock and impact of those fleet and foreign electric waves, which floated from some sister consciousness aching with its undelivered messages. And the woman who had so often called to him across space and silence, in the past, was now sounding the mystic key across those ghostly wires. But what the messages was, or from what quarter it came, he could not tell.