He lay still for a while to collect his senses. Then the keen sting of disappointment prevented him from realising his position. The box was gone! All his labour had been thrown away! Whatever it contained was at the mercy of the men. They had no one to prevent their carrying it off beyond hope of saving. Oh, what a fool he had been! And he had been priding himself on keeping ahead of them!

He could not get over his anger.

He was not badly hurt, however, and it was time to see where his folly had landed him. The prospect was not cheering. He was lying in a 'round hole,' as he called it afterwards, with a sandy bottom, while all around him the mighty rocks towered to immense heights. A strip of sky was just visible, and a star or two glimmered in the blue. He knew that stars could be seen sometimes, even in daylight, from great depths, but the remembrance of this was by no means comforting. Was he, then, at the bottom of a deep, narrow shaft? If so, how was he to get out again? Not a soul, except perhaps Thomas, knew of its existence, and Thomas was not in the least likely to betray his knowledge. In all probability, too, the men had fled with his box, and would be heard of no more, since they were now aware that their doings were known to at least one person.

For some moments Alan felt appalled as he glanced again at the height of his prison walls. The full force of his position came over him.

'Marjorie will give the alarm,' he thought, dismally, 'but they will never know where to look for me. If I'm to get out, it must be by my own efforts.'

He felt very unequal to the task of climbing those grim precipices, frowning so blackly down on him; but the daylight would soon be on the wane, and no time could be lost in vain regrets. Rousing himself, he got up, but found he had not escaped without some severe bruises, which would prove serious drawbacks to an awkward climb. It was miraculous that he had not met with worse injuries from so great a fall; only the soft sand and the smoothness of the walls had saved him. But this same smoothness was the chief hindrance to his escape. There was not a loophole of any sort or kind by which he could raise himself—not a twig or ledge to give him a hold. With increasing anxiety he scanned the walls still more closely, but, even though his eyes had become accustomed to the gloom, it was too dark to make out a single projecting edge, or the minutest crevice which could raise his hopes of escape. In despair, and with a sickening sense of dread, he sank down again on the sand. If Thomas had wished to put him out of the way, he could not have done so more completely, thought the boy, with bitterness.

CHAPTER VIII.

As time went on and Alan did not return, Marjorie stood up to listen, wondering what she ought to do. Should she wait, or go at once in search of him? Before she had made up her mind, however, her hesitation was brought to an end by a violent bang—a sound she knew only too well. Springing up the bank, she made her way as rapidly as the brushwood allowed to the ruin, remembering with dismay that Estelle and Georgie had been on the roof. When she got there, no one was to be seen. Georgie had gone away, very deeply hurt that Estelle should have left him in his sleep, from which he had been startled by the crash of the closing door. It was some time before Marjorie found him—safe, though resentful—sitting on a heap of swept-up leaves in the carriage-drive, talking to one of the gardeners.

She was in too great a hurry to listen to her little brother's complaints, and only stopped a moment to ask where Estelle was.

'Gone home, I suppose,' returned Georgie, not in the most gentle of voices. 'Didn't I tell you she was nowhere to be seen when I woke up?'