piled-up by the hand of man. Could any one of these be
a rough door?"

"No; absurd," said Captain Roby. "There, we have captured our prisoner;
let's get him down to the colonel."

"But what about his calling for Dirck to help him?" said Lennox eagerly.

"I did not hear him call for Dirck to help him," said Roby
contemptuously.

"No, but we did," cried Lennox, as he went on tapping the granite blocks
with the butt of his revolver, curiously watched the while by the
prisoner, who was in complete ignorance of the fact that Dickenson, who
stood half behind, was intently watching him in turn.

"Give it up, Lennox," said Captain Roby. "You are doing no good there."

"Burning!" cried Dickenson so suddenly that every one turned and stared.

"What is burning?" cried Captain Edwards.

"Drew Lennox is."

"Burning?"

"Hang it all, sir! have you forgotten all your childish games?" cried
Dickenson impatiently. "`Hot boiled beans,' you know. Lennox is
seeking, and he's burning."

"Am I?" cried Lennox excitedly, and the grim faces of the men thrown up
by the lanterns grew eager and excited too.

"To be sure you are," said Dickenson.

"How do you know?"

"By my lord the prisoner's phiz here. He gave quite a twitch when you
tapped that last rock but one."

"Ha!" cried Lennox; "then there is a way in here. I thought it sounded
hollow."

He stepped back and began to tap the rough stone again to prove his
words, every one now noticing that the rock gave out a dull, hollow
tone; while, unable to contain himself, the prisoner, as he lay tightly
bound upon his back, uttered a low, hissing sound as he drew in a deep
breath.

"Here we are," cried Lennox, more excited than ever. "Sergeant, give
some one else that lantern; take a man with you up there by the gun, and
bring back a crowbar or two, and one of the engineers' picks."

The men went off at once, and while the party awaited their return
Lennox went on examining the rough block of granite by which he stood,
but looked in vain for any sign of hinge or fastening.

"I hope you are right, Lennox," said Captain Edwards, who had stepped to
his side; and he spoke in a low voice.

"So do I," was the reply; "but I feel sure that there is, for there must
be a hiding-place somewhere. Wait a bit, and we shall capture the
prisoner's mate."

Lennox involuntarily glanced down at where the carefully bound Boer lay
with the light shining full upon his eyes, and he coul