"Stand as near to me as the gorge will allow," said the leader of the tribesmen, "and I will tell you what course to take when we have descended to the plain. There, as you well know, lies the zareba of these unbelieving dogs, and with them are many camels, and loot sufficient for us all. I command you to keep together until you are almost upon them. Then you will divide, and while one half march so as to gain the farther side, the other will rest where they are, taking pains to preserve the greatest silence. When all are ready, I will fire my gun, and then let every man fall upon the dogs. Allah will strengthen our arms, and will give us the victory."

"Allah is great, and we are his chosen," murmured his audience. "Lead us, and we will slay these unbelievers."

"Let them come a few paces nearer, and then shout to them to return home," said Jim sternly, whispering the words in his companion's ear. "Tell them that we had news of their intended attack, and that we will fire upon them if they come any nearer."

Striding to the barrier of stones, Ali called loudly to the sheik, who was in the act of moving forward again.

"Halt where you are!" he cried. "My master bids me tell you that he is aware of your treacherous plans, and that he is prepared to punish you for them. But he does not desire to shed blood, and therefore gives you the choice of returning in peace to your homes. If you refuse, he will open fire."

At the words the sheik and his following came to an abrupt stop, and stood there silently, dumfounded by the news. It seemed impossible that their intention should have been discovered by the leader of the expedition, and still more unlikely that he had the power to do them any but the smallest harm.

"Why, they are but thirty all told," cried the sheik, with a scoffing laugh. "And yet they come here to meet us and to threaten us with death should we persist in our plan. It is ridiculous! It is a child's plot, made to frighten us. Do not listen, but press on, my men."

With a shout the tribesmen at once started forward, and, drawing their weapons, rushed at the entrance of the gorge. But they had not counted on the fact that it was plunged in darkness, and obstructed with numerous boulders. Running forward upon a pathway which was, just there, lit by the rays of the moon, they stumbled blindly against the rocks, and, one of them happening to fall, a dozen or more of his comrades had tripped over him, and were grovelling on their faces before a minute had passed. But the remainder pushed on without a pause, and, closely packed together, and shrieking threats at the top of their voices, endeavoured to reach the spot where their unseen opponents were.

"Fire!" shouted Jim, seeing that the moment for action had at length arrived. "Empty your rifles into them."