"Well, I swan!"

He faced about quickly, and caught just one glimpse of a dark figure which was gliding swiftly and noiselessly up the path. All the Crusoe men saw it, and they were so astonished and dismayed by the unlooked-for interruption, that, for a moment, none of them could speak.

Tom Newcombe was the first to recover the use of his tongue. "O, now, we're caught, easy enough," he drawled. "This kills the expedition, and we might as well surrender ourselves prisoners at once. I always was the unluckiest boy in the whole world."

Just at that moment Sam Barton was of the same opinion regarding himself. His exultation at the victory he had gained over the rebels, gave way to a feeling of intense excitement and alarm. His under jaw dropped down, and he stood looking across the chasm toward the place where the spy had disappeared, as if he had suddenly been deprived of the power of action. It was no wonder that he was alarmed. His hiding-place had been discovered, and, of course, that ruined everything.

"Jerusalem!" ejaculated Will Atkins, who, now that his mutiny had been brought to an end, was quite willing to swear allegiance to the Crusoe band once more. "Did you see him, governor?"

"Well, I swan!" exclaimed Sam, unconsciously repeating the words the spy had used. "Did I see him? Have I got a pair of eyes? We're in a fix now, fellers. That ar' chap is another Bobby Jennings, an' if he gets away he'll ruin us, sure an' sartin." As the governor uttered these words they seemed to suggest a plan of operations. "Foller him up, lads," he exclaimed, excitedly. "Foller him up!"

"O, now, how do we know that he is alone?" drawled Tom. "Perhaps the farmer and all his men are with him."

"We've got to run that risk," replied Xury, seizing the rope and jumping over the chasm. "We must ketch him if we can. It's our only chance."

Tom could not help acknowledging this, and, although he trembled a little when he thought of the danger he might be about to run into, he crossed the gully with the others, and followed close behind the governor as he dashed up the path in pursuit of the spy.