When I returned to the deck the phenomenon in the sky had ceased, and it did not appear again all night.

But shortly after midnight another portentous event occurred to claim undivided attention.

The powerful wireless of the Albatross, which could hear messages coming and going throughout the United States and Canada, as well as over a great part of the Pacific Ocean, began to pick up accounts of terrible happenings all over the world. The fissures in the ground, which had appeared shortly before we left San Francisco, had suddenly widened and lengthened into a nearly-unbroken ring about the portion of the globe from which the inhabitants had been warned to flee. Within this danger-circle the ground had begun to vibrate heavily and continuously—as the lid of a tea kettle “dances” when the pressure of steam beneath it is seeking a vent.

The flight of the public from the doomed area had grown into an appalling hegira—until a fresh disaster, a few hours ago, had suddenly cut it short: the Rocky Mountains had begun to fall down throughout most of their extent, obliterating all the railroads and other highways that penetrated their chain. Now the way to safety beyond the mountains was hopelessly blocked.

And with this catastrophe hell had broken loose among the people of America!

It was near dawn before these stories ceased. The officers and myself were still discussing them when day broke and we beheld Dr. Gresham’s hydroplane circling high overhead, seeking a landing. In a few minutes the doctor was with us.

The instant I set eyes on him I knew he had met with some degree of success. But he said nothing until we were alone and I had poured out the tale of the night’s happenings.

“So you saw the flashes?” remarked the doctor.

“We were greatly puzzled by them,” I admitted. “And you?”