mean? By what inconceivable necromancy could a paved street with houses, trees and buildings be spirited away and the space it had occupied be closed up?

Was something happening in the world which he, in his secluded life, knew nothing about?

Mr. Chambers shivered, reached to turn up the collar of his coat, then stopped as he realized the room must be warm. A fire blazed merrily in the grate. The cold he felt came from something ... somewhere else. The cold of fear and horror, the chill of a half whispered thought.

A deathly silence had fallen, a silence still measured by the pendulum clock. And yet a silence that held a different tenor than he had ever sensed before. Not a homey, comfortable silence ... but a silence that hinted at emptiness and nothingness.

There was something back of this, Mr. Chambers told himself. Something that reached far back into one corner of his brain and demanded recognition. Something tied up with the fragments of talk he had heard on the drugstore corner, bits of news broadcasts he had heard as he walked along the street, the shrieking of the newsboy calling his papers. Something to do with the happenings in the world from which he had excluded himself.

He brought them back to mind now and lingered over the one central theme of the talk he overheard: the wars and plagues. Hints of a Europe and Asia swept almost clean of human life, of the plague ravaging Africa, of its appearance in South America, of the frantic efforts of the United States to prevent its spread into that nation's boundaries.

Millions of people were dead in Europe and Asia, Africa and South America. Billions, perhaps.

And somehow those gruesome statistics seemed tied up with his own experience. Something, somewhere, some part of his earlier life, seemed to hold an explanation. But try as he would his befuddled brain failed to find the answer.

The pendulum clock struck slowly, its every other chime as usual setting up a sympathetic vibration in the pewter vase that stood upon the mantel.

Mr. Chambers got to his feet, strode to the door, opened it and looked out.

Moonlight tesselated the street in black and silver, etching the chimneys and trees against a silvered sky.

But the house directly across the street was not the same. It was strangely lop-sided, its dimensions out of proportion, like a house that suddenly had gone mad.

He stared at it in amazement, trying to determine what was wrong with it. He recalled how it had always stood, foursquare, a solid piece of mid-Victorian architecture.

Then, before his eyes, the house righted itself again. Slowly it drew together, ironed out its queer angles, readjusted its dimensions, became once again the stodgy house he knew it had to be.

With a sigh of relief, Mr. Chambers turned back into the hall.

But before he closed the door, he looked again. The house was lop-sided ... as bad, perhaps worse than before!

Gulping in fright, Mr. Chambers slammed the door shut, locked it and double bolted it. Then he went to his bedroom and took two sleeping powders.

His dreams that night were the same as on the night before. Again there was the islet in mid-ocean. Again he was alone upon it. Again the squirming hydrophinnae were eating his foothold piece by piece.

He awoke, body drenched with perspiration. Vague light of early dawn filtered through the window. The clock on the bedside table showed 7:30. For a long time he lay there motionless.

Again the fantastic happenings of the night before came back to haunt him and as he lay there, staring at the windows, he remembered them, one by one. But his mind, still fogged by sleep and astonishment, took the happenings in its stride, mulled over them, lost the keen edge of fantastic terror that lurked around them.

The light through the windows slowly grew brighter. Mr. Chambers slid out of bed, slowly crossed to the window, the cold of the floor biting into his bare feet. He forced himself to look