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166 thrown from one of the invisible cars. But there was no moonlight, for the moon was just then hidden by clouds, and so there was no shadow except such as the light itself might cause. But presently, by walking backward from the window and again towards it, and then this way and that way before it, I discovered a star which appeared and disappeared as I walked. On further inspection it became evident that when the star disappeared it was hidden by some object which, though dark itself, was nevertheless that from which the light before the door proceeded. There could be no doubt that the light in question was thrown from one of the cars, and that the car from which it was thrown was not a hundred feet from the ground.

"Look," I said, "look! we are closely watched even here." But Jack was already fast asleep. I threw myself upon my bed and lay for hours broad awake.