He was an old and practised hand, knowing full well how to wield the implement so as to bore a hole big enough to hold the cartridge, and he toiled steadily on, forgetting his fear in his work, determined to go in a certain distance, and then insert the cartridge, light the fuse, and escape.

He calculated pretty well what the consequences would be. The thin wall at the end of the gallery would have a goodly piece blown out, and the water would rush in, flooding the mine beyond possibility of redemption.

Stroke, stroke, stroke, with the sparks flying fast, and once more the light from his lantern, as in the case of Geoffrey, cast that strange, weird shadow, as of the evil genius of the mine waving its arms, and threatening the intruder upon his realms.

Now the man paused and examined the edge of the tool he used, and wiped his forehead that was bedewed with sweat. Then he worked on again, till the sparks flew faster and faster, and he grimly laughed as he thought of what would be the consequences should one reach the cartridge.

“No fear of that,” he said, half aloud; and he worked on again for quite an hour before he stopped to rest.

“It’s gashly work all alone here,” he muttered, and he stood listening, but the only sound he heard was the regular thumping beat of the great pump, and the rushing noise of water, which came to him softened by the distance through which it travelled.

Another long attack upon the rock, with the tamping-iron going in deeper and deeper, till, with a grim look of satisfaction, he finished his work, and wiped and stood the tool aside.

“That’s long habit,” he said, half aloud. “That tool won’t be wanted any more; and, perhaps, a lad named Lannoe, with a hundred pound in his pocket, and a place where he can get more if he wants it, may stand better with old Prawle than a lame, preaching hound as ain’t so rich after all.”

“I wonder what time it is,” he muttered, with a shiver; and, having now completed one stage of his work, he hesitated, thinking of his means of escape; and, taking up his lantern, he went rapidly along to the foot of the shaft, listened for a few minutes, and then uttered a low whistle, which went reverberating up the long shaft to the still night air, and another whistle came back in answer.

“One whistle, make ready; two, draw up,” muttered Lannoe; and once more he threaded his way along the galleries, till he reached the spot where he had been at work.