To an indignant question he replied: "Naw, I ain't a-cussin' you. Lemme be or I'll have fits."

"Was it that sound that scared you?" I asked.

"Ya-as," he replied with a dauntless shiver.

"Was it the voice of the mammoth?" I persisted, excitedly. "Speak, William, or I'll drag you about and kick you!"

He replied that it was neither a mammoth nor a dingue, and added a strong request for privacy, which I was obliged to grant, as I could not torture another word out of him.

I slept little that night; the exciting proximity of the unknown land was too much for me. But although I lay awake for hours, I heard nothing except the tinkle of water among the rocks and the plover calling from some hidden marsh. At daybreak I shot a ptarmigan which had walked into camp, and the shot set the echoes yelling among the mountains.

William, sullen and heavy-eyed, dressed the bird, and we broiled it for breakfast.

Neither he nor I alluded to the sound we had heard the night before; he boiled water and cleaned up the mess-kit, and I pottered about among the rocks for another ptarmigan. Wearying of this, presently, I returned to the mules and William, and sat down for a smoke.

"It strikes me," I said, "that our instructions to 'await further orders' are idiotic. How are we to receive 'further orders' here?"

William did not know.