"I came down, sir," said he, "because our people in America would very much like to hear more about this danger which is, in your opinion, pressing upon the world."

"I know of no danger which is now pressing upon the world," Challenger answered gruffly.

The pressman looked at him in mild surprise.

"I meant, sir, the chances that the world might run into a belt of poisonous ether."

"I do not now apprehend any such danger," said Challenger.

The pressman looked even more perplexed.

"You are Professor Challenger, are you not?" he asked.

"Yes, sir; that is my name."

"I cannot understand, then, how you can say that there is no such danger. I am alluding to your own letter, published above your name in the London Times of this morning."

It was Challenger's turn to look surprised.