"Ships 37, 12, 19 and 44 reported destroyed by collisions, sir," he announced, his own voice tremulous. "The others report that they are again taking up formation behind us."

"Very well," I replied. "Order them to start again in three minutes, on Number One speed-scale."

As I turned back from the instrument I drew a deep breath. "Four ships destroyed in less than a minute," I said. "And by what?"

"By a whirlpool of ether-currents, undoubtedly," said Hurus Hol. We stared at him blankly, and he threw out a hand in quick explanation. "You know that there are currents in the ether-that was discovered ages ago-and that those currents in the Galaxy have always been found to be comparatively slow and sluggish, but out here in empty space there must be currents of gigantic size and speed, and apparently we stumbled directly into a great whirlpool or maelstrom of them. We were fortunate to lose but four ships," he added soberly.

I shook my head. "I've sailed from Sirius to Rigel," I said, "and I never met anything like that. If we meet another-" The strangeness of our experience, in fact, had unnerved me, for even after we had tended to our bruises and were again racing on through the void, it was with a new fearfulness that I gazed ahead. At any moment, I knew, we might plunge directly into some similar or even larger maelstrom of ether-currents, yet there was no way by which we could avoid the danger. We must drive blindly ahead at full speed and trust to luck to bring us through, and now I began to understand what perils lay between us and our destination.

As hour followed hour, though, my fearfulness gradually lessened, for we encountered no more of the dread maelstroms in our onward flight. Yet as we hummed on and on and on, a new anxiety came to trouble me, for with the passing of each day we were putting behind us billions of miles of space, and were flashing nearer and nearer toward the mighty dark star that was our goal. And even as we fled on we could see, on the great telechart, the dark disk creeping down to meet us, thundering on toward the Galaxy from which, unless we succeeded, it would steal a star.

Unless we succeeded! But could we succeed? Was there any force in the universe that could turn aside this oncoming dark giant in time to prevent the theft of our sun? More and more, as we sped on, there grew in my mind doubt as to our chance of success. We had gone forth on a blind, desperate venture, on a last slender chance, and now at last I began to see how slender indeed was that chance. Dal Nara felt it, too, and even Hurus Hol, I think, but we spoke no word to each other of our thoughts, standing for hours on end in the bridgeroom together, and gazing silently and broodingly out into the darkness where lay our goal.

* * *

On the sixth day of our flight we computed, by means of our telechart and flight-log, that we were within less than a billion miles of the great dark star ahead, and had slackened our speed until we were barely creeping forward, attempting to locate our goal in the dense, unchanged darkness ahead.

Straining against the windows, we three gazed eagerly forward, while beside me Nal Jak, the wheelman, silently regulated the ship's speed to my orders. Minutes passed while we sped on, and still there lay before us only the deep darkness. Could it be that we had missed our way, that our calculations had been wrong? Could it be-and then the wild speculations that had begun to rise in my mind were cut short by a low exclamation from Dal Nara, beside me. Mutely she pointed ahead.