way." The crowd milled around us as we were shoved along the base of the cliff. I could see Alan, pale, silent, with his bloodstained face; the grim, tight-lipped, pallid Carruthers; and Duroh, docile now. And it occurred to me then, as I caught a look of frightened appeal from Duroh, how different things may be, all in a moment or two. I had been captive of Duroh and Carruthers and Alan, just a moment ago. Murderous cut-throats, they would have dispatched me, no doubt, when I had helped them all they needed. But now they looked to me as though we four earthmen were allied here against this fantastic enemy. And it was apparent that, like many bloodthirsty villains, Carruthers and Duroh were terrified. Cowards at heart. We were being separated in the crowd. "Take it easy," I shouted. "Don't anger or frighten them—they'll kill us all." Certainly I had no wish to have Duroh go into a wild panic, with the Zurians killing me as well as the rest of us. We were all four unarmed now. They had searched us. One or two of them were carrying Duroh's and Carruthers' weapons, carrying them gingerly, awed and puzzled by them. Where were they taking us? We came to an end of the little ice-cliff, rounded it, and I saw a dark yawning hole, like a cave-entrance in the honeycombed cliffside. The little white Zurians who were leading us plunged into it. I was shoved forward more swiftly now, with the darkness engulfing me—darkness filled with jabbering little voices and the patter of their huge bare feet. It may have been that at first my eyes were not accustomed to the greater darkness, and that presently, with expanding pupils, I began to see. That, of course. But now I was aware of that sheen of light, inherent to the rocks of this strange little world. A vaguely luminous, opalescent sheen which grew in intensity as we advanced so that it illumined the darkness with a weird, beautiful glitter. I saw now that we were advancing into a widening tunnel. Already it was some fifty feet wide, with lifting ceiling so that presently I could only dimly see it, far up as it glistened in the opalescent light. Moisture was up there—a myriad tiny drops, glittering like opalescent gems in the eerie glow. Occasionally one would drop and hit my face. Steadily the jabbering little crowd, with excited guttural voices, pushed forward. I had the feeling at first that we were descending; this winding, broadening tunnel going downward at an ever increasing angle. Then presently it was as though the