would not strike in the eyes of his sleeping brother, drew out the
map and scanned it attentively.

Yes, here were the directions written in the queer hand of
Muley-Hassan's follower.

"A line from the nose straight down to the cairn of stones."

It seemed simple enough and certainly the nose of the Upturned Face
was as clearly to be made out as a ship at sea. But Frank had been
too long trained in the hard school of adventure to underestimate
the difficulties of any piece of work. They faced a hard job and
none realized the fact better than the young leader.

At last he blew the lantern out and once more composed himself to
sleep. He was just dozing off when a sufficiently startling
interruption occurred. One which drove all further thoughts of rest
from his head.

It was an extraordinary sound that brought the boy out of his bed
with a bound and caused him to clutch his revolver with a heart that
beat loud and thick in spite of himself.

Clutching his weapon the boy rushed to the door of the chassis tent
and gazed out.

There was a bright moon which threw into inky blackness the
depressions of the rugged mountains and threw up their projections
into a blue glare. It was almost as light as day under that
wonderful African moon. Had there been any one near the boy must