"I'm not prepared to say," he was told, "though I don't see how anybody with eyes could miss discovering us coming along. And, besides, the old car makes plenty of noise in the bargain, to attract attention. So it looks as if he did know, and was trying to talk to us."

All this only added to the thrill that was forever passing through each and every member of the night expedition. It would be manifestly impossible to describe their mixed feelings as they advanced slowly along the rough road so long abandoned to nature. A dozen times Horatio believed he heard cries; why, it seemed as though the air must be filled with uncanny sounds, for his lively imagination was working at race-horse speed just then.

The car stopped short.

"Wow! what's happened now, Hugh?" whisened Horatio.

"We've arrived at the getting-out place, that's all," came the steady reply, as the chauffeur caused the engine to cease working and then proceeded to leave his seat, after his companion had jumped out.

The lanterns were now lighted and the electric torch made ready for use. If hands trembled considerably during this operation, causing several matches to be used before the desired results were obtained, could anyone blame Owen and the other possessor of a lantern? It was a most remarkable thing that no one evinced the slightest disposition to stay by the car, and guard it against thieves. It was a case of "follow the leader," and where Hugh went they were all bound to go also. To be honest, the chances were that Horatio, for one, could not have been coaxed to separate himself from the company of his four chums; because there was a great deal of truth in that old maxim, "in union there is strength."

Hugh now led the way. He had been given one of the lanterns with which to light a passage across the heaps of broken stones, earth, and rubbish, cast there at the time in the remote past when the quarry was in full blast, with workmen delving into the hillside, blasting away sections through the use of dynamite or powder, and sending out many wagon-loads of building-stone each of the six working days of the week.

They did not string out in single file, but kept bunched together. Indeed, this came through no accident, but there was a method in their madness; because, you see, no fellow would want to be the hindmost in the file.

Hugh showed a wonderful amount of knowledge of the place, considering that he had never before in his life placed a foot upon the ground and had to depend entirely on his former observations. But he kept on as straight as could be expected, and presently Owen managed to muster up courage enough to say in a low and most carefully guarded tone:

"Hugh, did you take note of the exact spot where the light showed up?
I'm asking because you seem to be heading direct for somewhere."