"There's the sun, all right. What's our barometer reading?"
"Eight thousand feet."
"Try dipping, by the inclinometer."
Davis did so. Though there was not the slightest change in the appearance of the sky that compassed them all about, the barometer quivered from eight thousand feet to seven, and then to six. Gerrod suddenly uttered an exclamation:
"The sun's coming out!"
The fiery disk of the sun peered slowly from behind the edge of the cloud bank.
"There's another!"
From the opposite side of the cloud bank a second sun could be seen, slowly appearing as had the first. The two suns swam away from the fringe of the cloud and glared at each other.
"I've got it!" Gerrod struck his knee with his hand. "What fools we are!"
"I'm glad we're only fools," said Davis mildly. "I've been afraid we had gone mad. What's happened?"