"I only wish we had some instrument to show us where the other aeroplanes are," said Peggy; "it's hard to hear anything in this fog."
"Maybe it will clear off," suggested Jess hopefully.
"Not unless we get some wind," opined Jimsy; "queer how quick that wind dropped and this smother came up."
Nobody even hinted at the deadly danger they were in. But each occupant of the Golden Butterfly knew it full well. Except for the compass, they had no way of guiding their flight, and to turn about would have been to court disaster. There was only one thing for it, to keep on. This Peggy did, grimly compressing her lips.
"Hark!" exclaimed Jimsy suddenly.
Far below them they could hear a mournful sound. It was wafted up to them in fits and starts.
"Ding-dong! Ding-dong!"
"A church bell," cried Jess, "we must be over land, Peggy!"
The other shook her head.
"That's a bell buoy, I guess," she said.