"I wonder if Farvel has been here yet?" said Don.
"I think not—and I hope he doesn't come."
They moved on more slowly than ever. The foul air was now left behind and they gained a chamber where there was a steady current of cold air which made one and another shiver.
"What's that?" said Don, of a sudden.
He had heard a strange sound, and now they all noticed it.
"Is it somebody moaning?" gasped Leander.
"It certainly sounds like it," said old Jacob.
"Perhaps it is Farvel in trouble," suggested Bob.
The moaning rose and fell, as if a person was in great pain and unable to cry out loudly.
"Where does it come from?" was Dick's question.
No one was able to answer, and they stood in a mute crowd, looking at each other. Danny gave a shiver.
"I don't like dat nohow," he whispered.
"No more do I like it," muttered Leander. "It sounds like a ghost!"
"Don't say dat, or I'll be fer runnin' away!" cried the Irish lad.
Dash put up his nose and added a long whine.
"Where is it, Dash?" said Dick. "Show it to us, old boy!"
