"What?" demanded the startled Jack.
"The cypher. It is alphabetical. Listen here."
Young Jack approached.
"It is clear as daylight," said Harry; "these figures correspond with the letters of the alphabet."
"'Count four stones up from ground. Two from side of chimney. Press underneath. See what is revealed under it.'"
"Hurrah!" cried young Jack.
"Hurrah!" yelled Harry Girdwood; "but stop. Let us see if there is any thing in it, for we may yet escape."
CHAPTER XXXIV.
WHAT THE CYPHER DID FOR THEM—THE END OF THE PASSAGE—NEARLY
SAVED—BACK AGAIN—LOST—THE DEAD-HOUSE ON THE TERRACE.