"I don't think there is a doubt of it," he said. "We are quite three hundred feet lower here, and in all probability it is the same underground stream as we have at the Tor; but whether it will be possible to get right through into this cavern is more than we can judge till we have tried."

"But you will try, father?"

"Of course, my boy," cried Sir Edward; "and at once. Here, we must have Daniel Rugg, and hear what he says."

Dummy fetched his father, who listened in turn without a word.

"Sounds well, Rugg," said Sir Edward.

"Yes, Sir Edward; sounds well."

"But is the grotto likely to run so far?"

"Lots on 'em do. There's one yonder up in the Peak as goes for miles, and they've never yet found the end, nor where the water goes."

"Well," said Sir Edward, after a few minutes' thought; "I'm afraid to be too sanguine. This may all end in disappointment; but it shall be tried."

"Now, at once, I s'pose, Sir Edward?"

"Now, at once."

Ten men were chosen for the expedition, and Mark noted with satisfaction that Dan Rugg put forward those who had been accustomed to work in the mine.

"Better for getting along, Master Mark," said the miner, on seeing that Mark took notice of his action.

"But will ten be enough, Dan?"

"Why not, sir? Ten, and me and Dummy's twelve, and you and Sir Edward fourteen. Well, perhaps it would be as well to have a couple more."

Garth and Jennings were selected without having the slightest notion of where they were going, but they took their places without a word, only too glad to have some change from the monotonous existence they had been leading for many days.

No embargo was placed upon their way of marching, and they tramped eagerly on, till the occupants of the Castle were startled by their sudden arrival, to share in the surprise of their fellows when orders were given for rations to be supplied to each man, after a good meal had been eaten.

Half-an-hour after, well provided with picks, hammers, big nails for driving in the cracks, either for foot-hold or to bear ropes, the whole party were descending into the mine, with Dummy promoted, from his knowledge, to the onerous post of guide, leading, and Mark by his side or following next, according to the state of the way.

The men were in excellent spirits, for by this time the object of the expedition had oozed out, and it gave them a feeling of confidence now that the attack was to be made through the mine, where they were all much at home.

There was the rumour, too, that they were to take the enemy by surprise where there would be no barricades or breastworks, and altogether the men moved on after their young guides in the highest of spirits, feeling as they did that at last the petty war was to be brought to a conclusion.

The ways through the old galleries and chambers of the mine were traversed with the men talking and laughing, and reminding one another of this or that particular working where the lead ore was rich; and Dummy strode in front, bearing his lantern well, and his importance ill.

For he was to all intents and purposes the originator and head man of the little campaign, till suddenly casting his eyes sidewise he caught sight of Mark looking at him in an amused way, which discharged all his conceit upon the instant, as he flushed up and changed back to the old Dummy at once.

"You shouldn't laugh at a poor fellow, Master Mark," he remonstrated in a whisper.

"Then you shouldn't strut along like a game-c.o.c.k just come in for his spring feathers."

"I didn't," said Dummy angrily.

"You did. But go on. I will not laugh at you any more."

A complete change came over the boy, and he went on gravely enough after the reproof, till, to the surprise of all, they were led into the chamber hung with the veils of stalact.i.te, where Dummy stopped and looked round.

"Well, my lad, what does this mean?"

Dummy smiled in a rather imbecile way, and his father nudged him heavily with his elbow.

"Don't you hear what Sir Edward says? What you come here for? Lost your way?"

"No, I aren't lost my way, father."

"Then go back and show us. Where is it? Down by the old workings?"

"Nay, this is right," said the boy, in high glee at his father's puzzled look; and giving Sir Edward a wave of the hand, he went on to the end, and pa.s.sed behind the stony veil dropping from near the roof.

Sir Edward, uttered an e.j.a.c.u.l.a.t.i.o.n, and turned to his son.

"You have been by here, then?" he cried.

"Yes, father; this is the way," replied Mark. "Follow him."

"No, keep with him yourself," said Sir Edward. "You are the guides.

But be silent now."

"There is no need yet," replied Mark; "we have a tremendously long way to go yet."

"Let there be silence," said Sir Edward sternly. "For aught we know, these men, if the grottoes do communicate, may be exploring on their own account, and sound runs curiously along these pa.s.sages."

Mark accepted the rebuke, and joined Dummy at once, the rest of the party followed, and at a word from Sir Edward, raised their pikes and advanced steadily, as if expecting at any moment to meet the foe.

But many hours seemed to have elapsed, during which they had climbed, descended, squeezed through narrow upright cracks, and crawled, as the two lads had crawled before, ere they reached the limpid pool where their guides had rested and gone to sleep.

Here, at a word from Mark, Sir Edward gave the word to halt for refreshment, while, in company with the two lads, he made a farther advance, and planted two men at intervals along the route they took, following the flow of the underground stream, whose musical gurgling grew very plain at times.

The second man was posted a good two hundred yards beyond the first, and made no objection to being left in the dark, showing Dan Rugg's wisdom in selecting miners for the task in hand.

Then, silently and with great caution, Dummy led on along a wild chasm of the same nature as others they had pa.s.sed, and formed, evidently during some convulsion, the encrinite marble of which the walls were composed matching exactly, and merely requiring lateral pressure and the trickling of lime-charged water to become solid once again.

About three hundred yards beyond the last sentinel the trio paused, and stood listening and gazing as far as they could across a rock chamber whose sides glittered with double prismatic crystals.

But there was the water gurgling at the bottom of the deep crack along which they pa.s.sed--nothing more; and they returned toward the pool, Sir Edward giving the men a word or two of caution, and then pa.s.sing on to the others who were whispering to each other as they ate their food.

It was too good an example not to be followed, and soon after, quite refreshed, Sir Edward gave the order for a fresh start, the way being doubly interesting now that it was all fresh ground to the guides. In addition, it became more difficult, for the formation began now to change, and instead of being a succession of narrow crack-like pa.s.sages--in almost every variety of inclination between the horizontal and perpendicular, and rock grotto-like chambers of varying extent--the road began to fork and break up into vast halls, from which more than once they could hardly find an exit.

But Dummy was invaluable, and there was a kind of triumph in his face when he pointed out how easy it was to go on if you listened for the trickling of the stream below.

At last, after pa.s.sing through a long succession of scenes that were as wondrous as strange, Sir Edward called upon the boy to stop, and upon Dummy coming back to his side, lantern in hand, "Do you think you can find your way back?" he asked.

"Yes, with my eyes shut," said the boy, smiling.