awakened by hearing loud voices in the main cave. He looked out, rolling over slightly to get a better view. He saw the man who, once before had run in to give news of an approaching electrical storm.
"Are you fellows all ready?" asked this same man again.
"Yes. Is there another storm coming?"
"Yes, and it's going to be a corker!" was the reply. "It's one of the worst I've ever seen. It's sweeping right up the valley. It'll be here in an hour."
"That's good. We need a big flash to make all the material we have prepared into diamonds. It's the biggest batch we ever tried. I hope it succeeds, for we're going to leave" The rest was in so low a tone that Tom could not catch it.
The storm messenger departed. Folwell and Munson busied themselves about the machinery. Tom dozed off again, dimly wondering what had become of Bill Renshaw, and whether the former ghost knew of their plight. The others were asleep, as the young inventor saw by the dim light of a lantern in the cave. Then, he too, shut his eyes.
Tom was suddenly awakened by feeling some one's hands moving about his clothing. At
