'Listen to me,' he said. 'I've sent Deacon and Rogers to bring up as many Latukas as they can. If we can tide over to-morrow we may be able to inflict a crushing blow on the Arabs; but we must seize the ford over the river. The Arabs are holding it and our only chance is to make a sudden attack on them to-night before the natives join them. We shall be enormously outnumbered, but we may do some damage if we take them by surprise, and if we can capture the ford, Rogers and Deacon will be able to get across to us. We've lost Richardson and Thompson. Perkins is down with fever. That reduces the whites to Walker, and the doctor, Condamine, Mason, you and myself. I can trust the Swahilis, but they're the only natives I can trust. Now, I'm going to start marching straight for the ford. The Arabs will come out of their stockade in order to cut us off. In the darkness I mean to slip away with the rest of the white men and the Swahilis, I've found a short cut by which I can take them in the rear. They'll attack just as the ford is reached, and I shall fall upon them. Do you see?' George nodded, but he did not understand at what Alec was driving. The words reached his ears vaguely, as though they came from a long way off. 'I want one white man to lead the Turkana, and that man will run the greatest possible danger. I'd go myself only the Swahilis won't fight unless I lead them.... Will you take that post?' The blood rushed to George's head, and he felt his ears singing. 'I?' 'I could order you to go, but the job's too dangerous for me to force it on anyone. If you refuse I shall call the others together and ask someone to volunteer.' George did not answer. 'I won't hide from you that it means almost certain death. But there's no other way of saving ourselves. On the other hand, if you show perfect courage at the moment the Arabs attack and the Turkana find we've given them the slip, you may escape. If you do, I promise you that nothing shall be said of all that has happened here.' George sprang to his feet, and once more on his lips flashed the old, frank smile. 'All right! I'll do that. And I thank you with all my heart for giving me the chance.' Alec held out his hand, and he gave a sigh of relief. 'I'm glad you've accepted. Whatever happens you'll have done one brave action in your life.' George flushed. He wanted to speak, but hesitated. 'I should like to ask you a great favour,' he said at last. Alec waited for him to go on. 'You won't let Lucy know the mess I've made of things, will you? Let her think I've done all she wanted me to do.' 'Very well,' answered Alec gently. 'Will you give me your word of honour that if I'm killed you won't say anything that will lead anyone to suspect how I came by my death.' Alec looked at him silently. It flashed across his mind that it might be necessary under certain circumstances to tell the whole truth. George was greatly moved. He seemed to divine the reason of Alec's hesitation.