"He was bitten by an adder as we were vainly searching for the ivory," said the Arab sadly, "he died almost instantly."

Of course the boys felt no sorrow for the death of the treacherous scamp and did not pretend to. They had no great reason to love Muley-Hassan either, so Frank said coldly:

"What is it you want?"

"Permission to take my canoes and leave this cursed country forever."

Frank waved toward the river.

"Your canoes are where you left them the night you made the cowardly attack on our camp. You can have them all but one. That one we need."

"Alas," sighed the Arab, "I do not need as many as I did when I came. Of all my followers these alone remain."

He pointed to the scant six, skinny, fever-stricken wretches who stood behind him.

"Good-by," said the stately Arab, holding out his hand in farewell, "we shall never meet again, but I shall ever remember that you dealt by me far better than I would have dealt by you."

"At all events you have one good deed to look back to in your life," exclaimed the impulsive Billy.