But once more sandstorms delayed us. Then two days later our last camel sickened. We dragged it along all next day, but it died that evening.

I calculated that we were now not much more than forty miles from the road. There was nothing for it but to take as much water as each man could carry in a goatskin, with a scanty ration of food, abandon our gear, and plod on.

Whether it was that something had affected my compass, or whether in the sandstorms my computation of distance was inaccurate, I cannot say, but after traversing another thirty miles there was but a cupful of water left, and nothing in front but sand-dunes—high ones—a bad sign, since toward the desert’s edge they grow lower.

The rest of the journey was a nightmare that I cannot write. Arlsan went mad and refused to move, so that we had perforce to leave him while we struggled on seeking water and help. Two days later Islam collapsed, and I pushed on alone, and at dawn found myself among trees and fainted. When I came to, I found a wandering shepherd pouring water on my face.

When I was somewhat recovered, I had vast difficulty in getting him and his friends to come with me to search for Islam, but at last the sight of my money persuaded them. Following my tracks (by great good fortune the wind had dropped), we found Islam still breathing, but unconscious. Whether he was already weakly I cannot say, or whether the prolonged strain had been too much for him I know not, but he never recovered consciousness, and died that night. I could not induce them to go any farther, nor, indeed, was there any possibility of finding Arslan alive.

I made my way back westward, and found that I had reached the road seventy miles from where we had set out, which accounted for the extra length of our journey. I picked up my other men and the rest of my gear. Since Islam and Arslan were dead, I said naught to any man of our adventures beyond our failure to discover any ruined city, and our terrible journey back.

Some day I hope to go back and find out the secret of those unknown hills, but for the moment I feel drawn once more to look upon my kith and kin, and I shall make my way back to India and refit.

Wrexham closed the ragged diary and looked up. “Well,” he said in his deliberate way, “and that is what I call the ‘once,’ which is nothing. When I’ve had a drink, I’ll tell you about ‘twice,’ which, according to the expert, is merely coincidence. Manœuvre the whiskey, will you, Alec?”

Forsyth got up and opened the bottle and some sodas.

“Your old great-great-uncle either ought to have been a journalist, or else he found something d——d quaint. Have you got the arrow at home?”