He walked down the flight of steps, finding himself in a brilliantly lighted place. Doing as he saw the crowd do he bought a ticket at a little window and then, seeing a sign "Uptown Express Trains," he followed the throng going in that direction.

A moment later a string of cars came rumbling up along-side of the platform.

"All aboard!" called the guard.

The boy from the ranch got in and took a seat. The next moment the train started off at great speed, for it was an express, and made but few stops. Leaving the brilliantly-lighted station the cars plunged into darkness, relieved by an occasional electric lamp.

"Must be a tunnel," thought Roy. "We'll come out on top of the ground in a minute, and I can see what New York looks like. Space is so crowded down town, I s'pose they have to tunnel for a few blocks."

But the tunnel did not come to an end. In vain Roy waited for the train to emerge into daylight. Past station after station it rushed, the lights there showing for an instant, and then the darkness closing in again.

Finally the express stopped. Several passengers got off, and more got on. Then it started up again, still whizzing through the dark.

Roy could stand it no longer. Perhaps he had made a mistake and gotten into the wrong train This one might be destined for China, or some other under-ground port. Roy made his way to where a guard was standing.

"Excuse me, stranger," he began, in his broad western tones. "But how long is this tunnel, anyhow?"

"Tunnel? This ain't no tunnel!"