"Yes. I perish with my failure."

"Then I perish with you. And you, Marcel, save yourself—you coward!"

I started as if struck in the face. Then I said to Edith: "Be careful to keep to the track. Take the bay horse. I saddled him for myself, but you can ride him safely. Lose no time, and ride hard for the coast."

"Arthur Marcel," she answered, so softly that the others did not hear, "your work in the world is not yet over. There is the Labrador expedition. Just now, when my strength failed, you whispered 'courage.' Be true to yourself! Half an hour is gone."

At length some glimmer of human feeling awoke in Brande. He said in a low, abstracted voice: "My life fittingly ends now. To keep you, Natalie, would only be a vulgar murder." The old will power seemed to come back to him. He looked into the girl's eyes, and said slowly and sternly: "Go! I command it."

Without another word he turned away from us. When he had disappeared into the laboratory, Natalie sighed, and said dreamily:

"I am ready. Let us go."


CHAPTER XVIII.
THE FLIGHT.