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 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 of reckless speed even in a clear atmosphere, and then there were hideous precipices along the edges of which our way often led us. I shivered as I thought of the poor old fellow's peril.

At the top of my lungs I called to him to stop, but he did not answer me. And then I hurried on in the direction he had gone, faster by far than safety dictated.

For a while I thought I heard him ahead of me, but at last, though I paused often to listen and to call to him, I heard nothing more, not even the grunting of the bears that had been behind us. All was deathly silence—the silence of the tomb. About me lay the thick, impenetrable fog.

I was alone. Perry was gone—gone forever, I had not the slightest doubt.

Somewhere near by lay the mouth of a treacherous fis-