after eight o'clock. For seventeen hours the world has been soaked in the poisonous ether. For that length of time the Great Gardener has sterilized the human mould which had grown over the surface of His fruit. Is it possible that the work is incompletely done—that others may have survived besides ourselves?"
"That's what I was wonderin'," said Lord John. "Why should we be the only pebbles on the beach?"
"It is absurd to suppose that anyone besides ourselves can possibly have survived," said Summerlee, with conviction. "Consider that the poison was so virulent that even a man who is as strong as an ox, and has not a nerve in his body, like Malone here, could hardly get up the stair before he fell unconscious. Is it likely that anyone could stand seventeen minutes of it, far less hours?"
"Unless someone saw it coming and
