"I am quite of your mind, Mr. James," replied Simon, "but take my advice, and say nothing about it; let us make all researches ourselves."
"Oh, I know the result of such research beforehand!" cried the engineer.
"And what will it be, then?"
"We shall find proofs of malevolence, but not the malefactor."
"But he exists! he is there! Where can he lie concealed?
Is it possible to conceive that the most depraved human being could, single-handed, carry out an idea so infernal as that of bursting through the bed of a lake? I believe I shall end by thinking, like Jack Ryan, that the evil demon of the mine revenges himself on us for having invaded his domain."
Nell was allowed to hear as little as possible of these discussions.
Indeed, she showed no desire to enter into them, although it was very evident that she shared in the anxieties of her adopted parents.
The melancholy in her countenance bore witness to much mental agitation.
It was at length resolved that James Starr, together with Simon and Harry, should return to the scene of the disaster, and endeavor to satisfy themselves as to the cause of it.
They mentioned their project to no one. To those unacquainted with the group of facts on which it was based, the opinion of Starr and his friends could not fail to appear wholly inadmissible.
A few days later, the three friends proceeded in a small boat to examine the natural pillars on which had rested the solid earth forming the basin of Loch Katrine. They discovered that they had been right in suspecting that the massive columns had been undermined by blasting.
The blackened traces of explosion were to be seen, the waters having subsided below the level of these mysterious operations Thus the fall of a portion of the vast vaulted dome was proved to have been premeditated by man, and by man's hand had it been effected.
"It is impossible to doubt it," said James Starr; "and who can say what might not have happened had the sea, instead of a little loch, been let in upon us?"
"You may well say that," cried the old overman, with a feeling of pride in his beloved mine; "for nothing less than a sea would have drowned our Aberfoyle. But, once more, what possible interest could any human being have in the destruction of our works?"
"It is quite incomprehensible," replied James Starr. "This case is something perfectly unlike that of a band of common criminals, who, concealing themselves in dens and caves, go forth to rob and pillage the surrounding country. The evil deeds of such men would certainly, in the course of three years have betrayed their existence and lurking-places. Neither can it be, as I sometimes used to think, that smugglers or coiners carried on their illegal practices in some distant and unknown corner of these prodigious caverns, and were consequently anxious to drive us out of them.
But no one coins false money or obtains contraband goods only to conceal them!
"Yet it is clear that an implacable enemy has sworn the ruin of New Aberfoyle, and that some interest urges him to seek in every possible way to wreak his hatred upon us.
He appears to be too weak to act openly, and lays his schemes in secret; but displays such intelligence as to render him a most formidable foe.
"My friends, he must understand better than we do the secrets of our domain, since he has all this time eluded our vigilance.
He must be a man experienced in mining, skilled beyond the most skillful-- that's certain, Simon! We have proof enough of that.
"Let me see! Have you never had a personal enemy, to whom your suspicions might point? Think well!
There is such a thing as hatred which time never softens.
Go back to recollections of your earliest days.
What befalls us appears the work of a stern and patient will, and to explain it demands every effort of thought and memory."
Simon did not answer immediately--his mind evidently engaged in a close and candid survey of his past life. Presently, raising his head, "No," said he; "no! Heaven be my witness, neither Madge nor I have ever injured anybody. We cannot believe that we have a single enemy in the world."
"Ah! if Nell would only speak!" cried the engineer.
"Mr. Starr--and you, father," said Harry, "I do beg of you to keep silence on this matter, and not to question my poor Nell. I know she is very anxious and uneasy; and I feel positive that some great secret painfully oppresses her heart. Either she knows nothing it would be of any use for us to hear, or she considers it her duty to be silent.
It is impossible to doubt her affection for us--for all of us.
If at a future time she informs me of what she has hitherto concealed from us, you shall know about it immediately."
"So be it, then, Harry," answered the engineer; "and yet I must say Nell's silence, if she knows anything, is to me perfectly inexplicable."
Harry would have continued her defense; but the engineer stopped him, saying, "All right, Harry; we promise to say no more about it to your future wife."
"With my father's consent she shall be my wife without further delay."
"My boy," said old Simon, "your marriage shall take place this very day month. Mr. Starr, will you undertake the part of Nell's father?"
"You may reckon upon me for that, Simon," answered the engineer.
