“Well, Fanning, I guess this time it’s all U.P.”

Renshaw made no reply. He gazed wearily at the great iron-bound hills, whose cliffs were now beginning to reflect the glow of the declining sun—and chipped mechanically at the rocks with the geological hammer in his hand. His mind upon the subject was much the same as that of his companion; but in actual fact his despondency was far greater. Still with the desperate tenacity born of the habits of a lifetime, he was unwilling to give in.

Four days have gone by since we last saw our two adventurers bivouacking under the cliff—four days of threading mazy defiles and climbing the roof-like sides of mountains—four days of burning, sweltering exhaustion, ever eager, ever energetic with the tenfold vigour of a fierce hunt for riches. Three out of the four have been devoted to nothing but prospecting for their quest, for they passed the third beacon—the third turret-headed mountain of the clue—early on the day following that on which we last saw them—and now, worn out with toil and disappointment! they are resting in the sweltering afternoon heat deep down in a rock-bound valley where not a breath of air can come—not a whisper of a stir to relieve the oven-like glow which is rendering Sellon, at any rate, almost light-headed.

“A blank draw this time,” growled the latter, wearily. “And what an awful business it has been to get here! I wouldn’t go through it again for a thousand pounds. And then, just think what a brace of fools we shall look to the people at Sunningdale.”

Then as if the thought of Sunningdale—and what he had left there—put the crowning stone upon his misery, Sellon proceeded to curse most vehemently.

With weariness and disappointment, misfortune had overtaken our two friends since we saw them last. While riding along the burning sandy bottom of a dreary defile towards evening, the led horse had inadvertently trodden on a puff-adder—which, sluggish brute that it is, rarely gets out of the way. Blowing himself out with rage, this hideous reptile had flung up his squat bloated length, fastening his fangs in the leg of the unfortunate horse. The animal was doomed, and, indeed, in less than an hour was in its expiring throes.

Now, this was a terrible misfortune, for not only was the climbing and digging gear among the pack-load, but also the water-skin, and by far the greater part of their provisions; nearly the whole of the latter had to be abandoned, and loading up all that was indispensable upon their riding horses—already fast losing their former freshness—the two adventurers had pushed on. But by now the contents of the water-skin had run very low indeed; were it not for the lucky find of a tiny pool of slimy fetid water standing in a cavity of a rock, the horses would have given out already. As it was, they drank it up every drop, and felt the better for it.

“I doubt whether that bag of bones will carry me back, as it is,” said Sellon, gloomily, eyeing his dejected steed, now too weary to graze.

“Sellon,” said Renshaw, earnestly, still gazing around and completely ignoring his companion’s last remark—“Sellon, I can’t make it out now any more than the first time I was here. We have followed out the clue most minutely: ‘Straight from the smaller turret-head, facing the setting sun. Within a day’s ride.’ Now, we have explored and surveyed every point westerly between north and south, and within a good deal more than a day’s ride, thoroughly and exhaustively. There isn’t the shadow of a trace of any such valley, or rather crater, as old Greenway describes. But let’s go over the thing carefully again.”

Suddenly Maurice sat up from his weary lounging attitude.