Barney couldn\'t have said exactly what he expected to be shown. His imaginings had run in the direction of a camouflaged vault beneath McAllen\'s house—some massively-walled place with machinery that powered the matter transmitter purring along the walls ... and perhaps something in the style of a plastic diving bell as the specific instrument of transportation.

The actual experience was quite different. McAllen returned shortly, having changed into the familiar outdoor clothing—apparently he had been literal about going on a fishing trip. Barney accompanied the old physicist into the living room, and watched him open a small but very sturdy wall safe. Immediately behind the safe door, an instrument panel had been built in the opening.

Peering over the spectacles, McAllen made careful adjustments on two sets of small dials, and closed and locked the safe again.

"Now, if you\'ll follow me, Mr. Chard—" He crossed the room to a door, opened it, and went out. Barney followed him into a small room with rustic furnishings and painted wooden walls. There was a single, heavily curtained window; the room was rather dim.

"Well," McAllen announced, "here we are."

It took a moment for that to sink in. Then, his scalp prickling eerily, Barney realized he was standing farther from the wall than he had thought. He looked around, and discovered there was no door behind him now, either open or closed.

He managed a shaky grin. "So that\'s how your matter transmitter works............