It came! When we had drawn to within a half-mile of the black forest where our cruiser lay hidden, another great tumult of horn-notes burst out over the glowing city behind, high and shrill and raging. And glancing back we saw swarms of the black cones rising from the pyramidal buildings' summits, circling, searching, speeding out over the glowing plains around the city, a compact mass of them racing straight toward us.
"On!" cried Hurus Hol. "It's our last chance-to get to the cruiser!"
* * *
Staggering, stumbling, with the last of our strength we sped on, over the glowing soil and rocks, toward the rim of the black forest which lay now a scant quarter-mile ahead. Then suddenly Hurus Hol stumbled, tripped and fell. I halted, turned toward him, then turned again as Dal Nara shouted thickly and pointed upward. We had been sighted by the speeding cones above and two of them were driving straight down toward us.
A moment we stood there, rigid, while the great cones dipped toward us, waiting for the death that would crash down upon us from them. Then suddenly a great dark shape loomed in the air above and behind us, from which sprang out swift shafts of brilliant green light, the dazzling de-cohesion ray, striking the two swooping cones and sending them down in twin torrents of shattered wreckage. And now the mighty bulk behind us swept swiftly down upon us, and we saw that it was our cruiser.
Smoothly it shot down to the ground, and we stumbled to its side, through the waiting open door. As I staggered up to the bridgeroom the third officer was shouting in my ear. "We sighted you from the forest," he was crying. "Came out in the cruiser to get you-"
But now I was in the bridgeroom, brushing the wheelman from the controls, sending our ship slanting sharply up toward the zenith. Hurus Hol was at my side, now, pointing toward the great telechart and shouting something in my ear. I glanced over, and my heart stood still. For the great dark disk on the chart had swept down to within an inch of the shining line around our sun-circle, the danger-line.
"The condenser!" I shouted. "We must get to that switch-turn it off! It's our only chance!"
We were racing through the air toward the luminous city, now, and ahead a mighty swarm of the cones was gathering and forming to meet us, while from behind and from each side came other swarms, driving on toward us. Then the door clicked open and Dal Nara burst into the bridgeroom.
"The ship's ray-tubes are useless!" she cried. "They've used the last charge in the ray-tanks!"