hear the cry again. What was the meaning of this silence? Was the
madman already conscious of their presence? Was he creeping upon them
at that moment, as still as the black shadows that shut in their
vision? His mind was working in such vivid imaginings that he was
startled when Wabi prodded him gently in the side.

"Look over there--across the chasm," he whispered. "See that glow on
the mountain wall?"

"The moon!" replied Rod.

"Yes. I've been watching it, and it's creeping down and down. The
moon is going to swing across this break in the mountains. In fifteen
minutes we shall be able to see."

"It won't swing across so much as it will come up in line with us,"
replied Rod. "Watch how that light is lengthening! We shall be able to
see for several hours."

He started to rise to his feet but fell back with an astonished cry.
For a third time there came the mad hunter's scream, this time far
above and beyond them, floating down from the distance of the moon-lit
plain!

"He passed us!" exclaimed Wabi. "He passed us--and we didn't hear
him!" He leaped to his feet and his voice rose excitedly until it rang
in a hundred echoes between the chasm walls. "He passed us, and we
didn't hear him!"

Mukoki's voice came strangely from out of the gloom.