“This is the first trip,” replied Hal.

“Too bad,” was the response. “It’ll be torture for you. You will probably collapse before time to come up, in which case you’ll be kicked back to consciousness. That’s what happened to me.”

“If they begin kicking me, they’ll have to go a bit further,” said Hal grimly.

“That was what I thought,” said the Englishman. “I put up a fight, but it wasn’t any use. They almost beat the life out of me, after which I was put in solitary confinement with nothing to drink and almost nothing to eat. Let me tell you, solitary confinement is worse than the mines, so if you’ll take my advice, you’ll stick and endure as long as you can, and when you’ve been kicked back to consciousness again you’ll return to work and keep your mouth shut. Am I right, Mercer?” he demanded, turning to the Frenchman.

“Oui, monsieur,” returned the latter briefly.

Again Hal shrugged.

“We’ll see,” he said shortly.

Under the guns of the guards, the four men took their places in the little elevator-car that was to carry them below.

“Get your last look at the outside world,” said the Englishman, as the starter gave the signal to descend. “It’ll be the last you get for some time.”

The little car seemed to drop from beneath the feet of Hal and Chester as it shot down in the mine. Hal was conscious of a sinking sensation in the pit of his stomach. Chester drew his breath sharply.