“Hark!” he cried out sharply. “What was that?”
CHAPTER XVII
A GRATEFUL FRIEND
The oncoming night in the dreary solitude with which the young airmen were environed seemed filled with alarms. All three listened intently.
At a further distance away than at the first, the renewed howling of the wolves broke forth. The pack seemed to have chanced upon some new trail of prey.
“Why,” Hiram was the first to break the thrilling silence, “do you hear that, fellows?”
“Sleigh bells!” cried Elmer, instantly.
“Yes, and I hear the neighing of horses,” added our hero. “More than one. Listen!”
Muffled yet unmistakable, the sound of sleigh bells jangling sharply broke upon the air. There followed loud echoing neighs. Then there rose a sudden scream.
“Oh, Dave!” gasped Hiram, “it was a human voice! A man’s scream, I’ll wager! There it is again!”