must either remain in the hut until we starved to death or venture forth, empty, to fill the belly of some hungry bear. 

 I must admit that I, too, felt worried, for our progress was indeed snail-like, and our ammunition could not last forever. In discussing the problem, finally we came to the decision to burn our bridges behind us and make one last supreme effort to cross the divide. 

 It would mean that we must go without sleep for a long period, and with the further chance that when the time came that sleep could no longer be denied we might still be high in the frozen regions of perpetual snow and ice, where sleep would mean certain death, exposed as we would be to the attacks of wild beasts and without shelter from the hideous cold. 

 But we decided that we must take these chances and so at last we set forth from our hut for the last time, carrying such necessities as we felt we could least afford to do without. The bears seemed unusually troublesome and determined that time, and as we clambered slowly upward beyond the highest point to which we had previously attained, the cold became infinitely more intense. 

 Presently, with two great bears dogging our footsteps we entered a dense fog. 

 We had reached the heights that are so often cloud-wrapped for long periods. We could see nothing a few paces beyond our noses. 

 We dared not turn back into the teeth of the bears which we could hear grunting behind us. To meet them in this bewildering fog would have been to court instant death. 

 Perry was almost overcome by the hopelessness of our situation. He flopped down on his knees and began to pray. 

 It was the first time I had heard him at his old habit since my return to Pellucidar, and I had thought that he had given up his little idiosyncrasy; but he hadn’t. Far from it. 

 I let him pray for a short time undisturbed, and then as I was about to suggest that we had better be pushing along one of the bears in our rear let out a roar that made the earth fairly tremble beneath our feet. 

 It brought Perry to his feet as if he had been stung by a wasp, and sent him racing ahead through the blinding fog at a gait that I knew must soon end in disaster were it not checked. 

 Crevasses in the glacier-ice were far too frequent to permit 

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