"See that!" The camels of the Dervishes had all knelt down simultaneously, and the men had sprung from their backs.

In front of them was a tall, stately figure, who could only be the Emir Wad Ibrahim.

They saw him kneel for an instant in prayer.

Then he rose, and taking something from his saddle he placed it very deliberately upon the sand and stood upon it.
"Good man!" cried the Colonel.

"He is standing upon his sheepskin." "What do you mean by that ?" asked Stuart.
"Every Arab has a sheepskin upon his saddle.