Mark caught him by the arm just as he was in the act of doing it; but it was not for that reason. He suggested that they have papers ready to keep that precious fire going. It was a good idea, and proved so popular that the Parson, filled with a spirit of self-sacrifice, even tore out the blank title pages of his Dana to contribute. And then at last Dewey struck the light.

The match was a good one fortunately. It flickered and sputtered a moment, seeming to hesitate about burning, while the lads gasped in suspense. Then suddenly it flared up brightly, and they gazed about them in dread.

CHAPTER IV.
A HORRIBLE DISCOVERY.

What a lot of grewsomeness a little match can remove, to be sure! This one did not solve the mysteries of that wondrous cave, but it removed most of the horror of the explorers. It showed, for instance, that the furry thing which Mark had vowed was alive was an ordinary plush-covered chair!

The seven had no time to laugh at that; they were too busy staring. The feeble light could not reach to the other end of the long vista they saw, and neither could one of the papers they hastily lit. But it gave them one glimpse of a most amazing scene.

This cave was indeed a surprising place. The carpet they saw covered nearly all of the floor. There were chairs scattered about, and other articles of furniture. There were some curtains draped from the rocky walls. There were swinging lamps from the vaulted roof. Down in the dim distance there was even a table—a table with shining white dishes upon it. And then the light began to flicker.

Quick as a flash Mark seized it and sprang toward one of the lamps. He was just in time. He whipped off the shade and touched the wick. A moment later they were standing in a brilliant, clear light, that shone to the farthest depths of the place.

The seven bold plebes stood in the center beneath the lamp, perfectly amazed by what they saw. The same idea was flashing across the minds of all of them. This splendor must belong to some one! Those dishes up there were set for a meal! And the owner—where was he? Suppose he should come and find them there? Indian cast a longing glance at the opening that led to freedom outside.

Probably the wisest course for them would have been precipitate flight. To be trapped in there by desperate men would be terrible indeed! But curiosity urged them on. This was a glorious mystery—a mystery worth solving. It was almost a fairy tale; an enchanted princess alone was needed.