We got Dr. Mallory out of that furnace. How long we battled the fire after that is hard to say. At least an hour. Krassner had planned his coup with deadly Teutonic thoroughness. Not only had he arranged the fuse and explosive charge; he had also soaked walls, drapes, furniture, with gasoline.

Against this, our water was useless. We had no sand. Men labored to drag the lethal crates of explosive out of the danger zone; after that we went back at the ever-spreading fire. Chemicals did the trick finally. The last blaze succumbed to the stifling blanket of carbon dioxide, a clean-up crew methodically swept up the last of the charred débris.

Thus died Krassner—but at what a cost! Ten of my men in the hospital, at least two of them seriously burned. Three whole bins of provisions gone forever, devoured by the hungriest of all foes. A binful of linens, clothing, blankets, burned to cinders. And every other room that had been in that aft section of the ship gutted!

All these disasters paled into insignificance when, bandaged, cleaned, reclad, I went to visit Dr. Mallory. One look at his face and I knew that here was the heaviest price we were to pay for the destruction of our last mortal foe. Only Mallory's eyes were visible under the swaddling mask of bandage, and these were raw and bloodshot. But the ghost of a smile lighted these fine old eyes, and his voice, sieved through a layer of gauze, said weakly:

"I ... reached there in time ... Brian, lad."

"You did that," I told him huskily. "You saved us all, Doctor."

"Not only us, but ... mankind. We had to live, Brian. You must lead ... our people ... out of the wilderness."

I said, "Not I, Doctor. You. You are the only man who can save us, reclaim the sleeping world—"

He said, as though not hearing me, "It's a good ... thing I showed Maureen ... how to run the ship. Isn't it? Now she can take us to Luna.

"Brian, boy ... find the notes ... in my desk. They'll help you. I believe ... you'll find the crater of Copernicus ... the best place to land. There will be air there. Thin, maybe. But air. In the underground grottoes ... should be ... water...."