My quarry was plainly visible again, and in the increasing light from the phosphorescent rock that lay embedded in great patches in the roughly arched roof of the cavern I had no difficulty in following him. It was my first trip upon the bosom of Iss, and the things I saw there will live forever in my memory. Terrible as they were, they could not have commenced to approximate the horrible conditions which must have obtained before Tars Tarkas, the great green warrior, Xodar, the black dator, and I brought the light of truth to the outer world and stopped the mad rush of millions upon the voluntary pilgrimage to what they believed would end in a beautiful valley of peace and happiness and love. Even now the low islands which dotted the broad stream were choked with the skeletons and half