Swiftly we moved forward, now, down the street through the dusk toward the great clearing. Mighty machines looming in the red dusk on each side of us, dark pits yawning between them in which the comet-hordes lay silent, glowing crimson coma that swung above--these made an inconceivably weird scene about us through which we three, a weird and dissimilar enough trio in that lurid dusk, moved rapidly on. Once we saw a few of the liquid-creatures flowing across one of the streets ahead, shrank back until they had disappeared, then moved swiftly on. One or two cube-ships slid by above, too, but these did not spy us, and in a few minutes more we had emerged from the mass of machines and pits into the great flat-floored circular plaza at the city's center, the truncated pyramid rising vaguely from it in the crimson dusk. "The guards!" whispered Gor Han. "There at the pyramid's base!" I gazed, saw that a great notched stair or flight of narrow steps ran up the pyramid's side, and that at its foot were some four dark liquid-shapes, lying motionless, but with weapons of some sort, bolt-containers I did not doubt, held in the grasp of their viscous fluid bodies. A moment we hesitated, then crept out across the clearing toward them. They seemed not aware of our approach, and still nearer we crept stealthily, approaching them from a side, until just when we were within yards, within feet of them, one seemed to flow swiftly toward us for an instant, then back, at the same time training his deadly weapon upon us! Before he could loose the crashing bolts from it, though, we had sprung upon them! The combat that followed at the pyramid's base was the most horrible, I think, that ever I engaged in. I had grasped at the body of one of the things but instantly felt the viscous liquid body withdraw from my grasp, flow away from me, while I struggled in vain for some hold upon it. Then I glimpsed Gor Han with his four great arms gripping one of the viscous things and hurling it against the pyramid's side before it could evade his grasp, shattering it into liquid black splashes there. The thing I struggled with had gripped me in turn, now, and was like fluid steel in the strength with which it held me. I felt a powerful viscous arm tightening about my neck, while others pinioned my arms, felt that grasp tightening, strangling me, and then it was abruptly torn from me as Gor Han lifted and flung it likewise! I rose, staggering, to see that of the four comet-creatures only black splashes here and there about us remained, Gor Han and Jurt Tul having annihilated them with their mighty limbs. [Illustration: "The combat that followed was the most horrible I had ever engaged in."] "Up to the pyramid's summit!" I choked, stumbling toward the stair's base. "We've a chance to win yet!"