If it pleases you to believe this rigmarole about ether and Fraunhofer's lines upon the spectrum, do so by all means, but do not ask one who is older and wiser than yourself to share in your folly. Is it not evident that if the ether were affected to the degree which he maintains, and if it were obnoxious to human health, the result of it would already be apparent upon ourselves?" Here he laughed with uproarious triumph over his own argument. "Yes, sir, we should already be very far from our normal selves, and instead of sitting quietly discussing scientific problems in a railway train we should be showing actual symptoms of the poison which was working within us. Where do we see any signs of this poisonous cosmic disturbance? Answer me that, sir! Answer me that! Come, come, no evasion! I pin you to an answer!"

I felt more and more angry. There was something very irritating and aggressive in Summerlee's demeanour.

"I think that if you knew more about the facts you might be less positive in your opinion," said I.

Summerlee took his pipe from his mouth and fixed me with a stony stare.

"Pray what do you mean, sir, by that somewhat impertinent observation?"

"I mean that when I was leaving the office the news editor told me that a telegram had come in confirming the general illness of the Sumatra natives, and adding that the lights had not been lit in the Straits of Sunda."

"Really, there should be some limits to human folly!" cried Summerlee in a positive fury. "Is it possible that you do not realize that ether, if for a moment we adopt Challenger's preposterous supposition, is a universal substance which is the same here as at the other side of the world? Do you for an instant suppose that there is an English ether and a Sumatran ether? Perhaps you imagine that the ether of Kent is in some way superior to the ether of Surrey, through which this train is now bearing us.