"Yes," he said. "That's what I've been considering making, though I haven't told Rob about it yet. They'll be far more stable for the purpose than planes."

"Why, yes," I agreed. "Croft, it's a rather peculiar thing, but before the armistice was signed in Europe each side was planning to blot out the major cities of the opposing nations beneath a fiery rain."

For that was the thing I had proposed to Jason, and the secret for the production of the unquenchable liquid fire which could be stored and carried, and sprayed in a rain of death upon those against whom it was used, was the thing I had gained from Captain Gaylor, formerly connected with the department of gas and flame.

Horrible—well, yes, but surely subtly suited to Croft's needs for use against the nation which, enraged by the defeat of its former plans for aggrandizement at the expense of the country he served, had struck against the most sacred, the highest and holiest interests of his life—seeking in such fashion, rather than by any legitimate method, to finally effect their aims—a nation, a representative of which I myself had heard in the spirit at least vow that, unless those aims were thereby accomplished, an innocent child should be sacrificed to a savage deity by fire.

Yet because of Kalamita's oath and Helmor's agreement, a move to exercise force in her rescue would be equally fatal, unless—well, unless it was a force that could strike silently and swiftly—a force in the nature of a total and terrifying surprise. And surely the blimps—the dirigible balloons Croft suggested, equipped with a flame-spraying device and plenty of liquid fire, might well prove a terrifying, a paralyzing spectacle to even Helmor's and Kalamita's eyes. Paralyzing not only to the body, but to the brain itself—warranted to make simple any bargain which would preserve themselves and Berla from a blazing rain of death.

His whole astral presence glowed with the intensity of his emotions, the deadly determination by which he was stirred. For the first time I realized fully how he had won Naia against all opposition, and had carried all before him in Palos after he gained existence on the planet in the flesh. No ordinary mind could stand against such concentrated mental force.

"By Zitu," I cried, "I believe you!" I felt a quiver shake me. It was as though already the doom of Helmor's plans and Kalamita's vengeance was sealed. "Croft," I questioned, "you know the general nature of these blimps?"

"Aye," he nodded. "But if you have any suggestions, Murray—"

"Well," I said, "Captain Gaylor gave me the general plan in describing how the stuff you're going to demonstrate to Helmor was to be carried—as well as a description of the fire bombs they meant to carry aboard their planes. You know just before the armistice, Jason, there was talk of a new deadlier gas. In reality it wasn't gas at all, but this stuff of which I've told you. The gas talk was just a mask."

"Go on—tell me, Murray," he prompted tensely. "Give me all you can to begin with, though if I get stuck I'll be back again, of course."