“Ghosts of Snake Island,” came back the echo. And then, as suddenly as they had appeared, the “ghosts” vanished, leaving the boys and the professor staring into the darkness.
[CHAPTER XXV]
A NEST OF SERPENTS
“What—what do you think they were?” asked Bob, after a few moments of silence. He spoke in low tones, so that the weird echo would not repeat his words.
“I give it up,” said Jerry.
“Maybe they were the ghosts of the three men in the boat, who may have been drowned around here,” suggested Ned.
“Nonsense!” exclaimed the tall lad. “Don’t be silly, Ned.”
“Well, I was only joking.”
“Pretty poor joking,” commented Bob. “I’m going inside. It’s chilly out here,” and he shivered.