"Yes," said Solino slowly, "down. The gateway to that land is at the bottom of the ocean."

As the two men gaped at him, incredulous, an awful thing happened. With an appalling roar and a rending of steel and iron, the submarine halted abruptly in its headlong flight, reared upward at an acute angle and then fell forward with a tremendous crash. The adventurers were thrown violently against a steel bulkhead, and slumped down unconscious….

H ow long they lay there insensible they never knew. Justus Miles was the first to come to, and he found himself in Stygian blackness. "Rusty!" he called, feeling terribly sick and giddy. Only silence answered him. "Good God!" he thought, "what has happened?" His hand went out and recoiled from something soft and sticky. Gingerly he sat up. There was a lump on his head. His body felt bruised and sore but it was evidently sound. He recollected the small but powerful flashlight in his pocket, and drew it forth and pressed the button. A reassuring pencil of light pierced through the gloom. Even as it did so, someone groaned, and Ward's voice uttered his name.

"Is that you, Kid?"

"It's me, all right."

"You ain't hurt?"

"Nothing to speak of. How about you?"

"O. K., I guess. An awful headache."

"Can you stand up?"

"Yes."