Then, again, take that matter of meeting Pringle in Gatchard just at that time, within the same week. It was due to Davidson’s sister. She had invited Mr. and Mrs. Pringle in to meet him one evening, without telling him that they were spiritualists and might discuss spiritualism.

Clairvoyance, Pringle called it, or seeing what can’t be seen with material eyes, and clairaudience, or hearing what can’t be heard with material ears, as well as materialization, or ghosts, and table-rapping, and the like. Table-rapping—that damned tap-tapping that he had been hearing ever since!

It was Pringle’s fault, really. Pringle had persisted in talking. He, Davidson, wouldn’t have listened, except that he somehow became fascinated by what Pringle said concerning what he had heard and seen in his time. Mersereau must have been at the bottom of that, too.

At any rate, after he had listened, he was sorry, for Pringle had had time to fill his mind full of those awful facts or ideas which had since harassed him so much—all that stuff about drunkards, degenerates, and weak people generally being followed about by vile, evil spirits and used to effect those spirits’ purposes or desires in this world. Horrible!

Wasn’t it terrible? Pringle—big, mushy, creature that he was, sickly and stagnant like a springless pool—insisted that he had even seen clouds of these spirits about drunkards, degenerates, and the like, in street-cars, on trains, and about vile corners at night. Once, he said, he had seen just one evil spirit—think of that!—following a certain man all the time, at his left elbow—a dark, evil, red-eyed thing, until finally the man had been killed in a quarrel.

Pringle described their shapes, these spirits, as varied. They were small, dark, irregular clouds, with red or green spots somewhere for eyes, changing in form and becoming longish or round like a jellyfish, or even like a misshapen cat or dog. They could take any form at will—even that of a man.

Once, Pringle declared, he had seen as many as fifty about a drunkard who was staggering down a street, all of them trying to urge him into the nearest saloon, so that they might re-experience in some vague way the sensation of drunkenness, which at some time or other they themselves, having been drunkards in life, had enjoyed!

It would be the same with a drug fiend, or indeed with any one of weak or evil habits. They gathered about such an one like flies, their red or green eyes glowing—attempting to get something from them, perhaps, if nothing more than a little sense of their old earth-life.

The whole thing was so terrible and disturbing at the time, particularly that idea of men being persuaded or influenced to murder, that he, Davidson, could stand it no longer, and got up and left. But in his room upstairs he meditated on it, standing before his mirror. Suddenly—would he ever forget it—as he was taking off his collar and tie, he had heard that queer tap, tap, tap, right on his dressing-table or under it, and for the first time, which Pringle said, ghosts made when table-rapping in answer to a call, or to give warning of their presence.

Then something said to him, almost as clearly as if he heard it: