possibly whole cities in flames—when we consider how many folk may have dropped with lights in their hands. The fact of combustion is in itself enough to show that the proportion of oxygen in the atmosphere is normal, and that it is the ether which is at fault. Ah, there you see another blaze on the top of Crowborough Hill. It is the golf clubhouse, or I am mistaken. There is the church clock chiming the hour. It would interest our philosophers to know that man-made mechanism has survived the race who made it."
"By George!" cried Lord John, rising excitedly from his chair. "What's that puff of smoke? It's a train."
We heard the roar of it, and presently it came flying into sight, going at what seemed to me to be a prodigious speed. Whence it had come, or how far, we had no means of knowing. Only by some miracle of luck could it have gone any distance. But now we were to see the terrific end of its career. A train of coal-
