“At present he has no time to do that.”

“But I must take him, Mr. Reade.”

“Have you a search warrant?”

“No,” reluctantly said the detective.

“Then you can’t come in here.”

“I’ll watch for him outside, then.”

“Very well,” answered Frank, shutting the door.

He went aboard of the Ranger, as he had christened the flying ice ship, and opening a door in the wheel-house, found himself in a large room.

It contained some furniture, a compass, steering wheel, levers for controlling the mechanism, and a number of registers.

A companionway led him down into a small but beautiful cabin, where he found the professor pacing nervously to and fro.