The other met his gaze calmly. “Who can tell! An accident, perhaps, or—”

“Or some one set the mills on fire in several places at once—they say the buildings flamed out in every corner; and it was the only time in a month they hadn’t been running night and day. Funny, isn’t it?”

“It looks like the work of an enemy, effendi.” Nahoum shook his head gravely. “A fortune destroyed in an hour, as it were. But we shall get the dog. We shall find him. There is no hole deep enough to hide him from us.”

“Well, I wouldn’t go looking in holes for him, pasha.

“He isn’t any cave-dweller, that incendiary; he’s an artist—no palace is too unlikely for him. No, I wouldn’t go poking in mud-huts to find him.”

“Thou dost not think that Higli Pasha—” Nahoum seemed startled out of equanimity by the thought. Lacey eyed him meditatively, and said reflectively: “Say, you’re an artist, pasha. You are a guesser of the first rank. But I’d guess again. Higli Pasha would have done it, if it had ever occurred to him; and he’d had the pluck. But it didn’t, and he hadn’t. What I can’t understand is that the artist that did it should have done it before Claridge Pasha left for the Soudan. Here we were just about to start; and if we’d got away south, the job would have done more harm, and the Saadat would have been out of the way. No, I can’t understand why the firebug didn’t let us get clean away; for if the Saadat stays here, he’ll be where he can stop the underground mining.”

Nahoum’s self-control did not desert him, though he fully realised that this man suspected him. On the surface Lacey was right. It would have seemed better to let David go, and destroy his work afterwards, but he had been moved by other considerations, and his design was deep. His own emissaries were in the Soudan, announcing David’s determination to abolish slavery, secretly stirring up feeling against him, preparing for the final blow to be delivered, when he went again among the southern tribes. He had waited and waited, and now the time was come. Had he, Nahoum, not agreed with David that the time had come for the slave-trade to go? Had he not encouraged him to take this bold step, in the sure belief that it would overwhelm him, and bring him an ignominious death, embittered by total failure of all he had tried to do?

For years he had secretly loosened the foundations of David’s work, and the triumph of Oriental duplicity over Western civilisation and integrity was sweet in his mouth. And now there was reason to believe that, at last, Kaid was turning against the Inglesi. Everything would come at once. If all that he had planned was successful, even this man before him should aid in his master’s destruction.

“If it was all done by an enemy,” he said, in answer to Lacey, at last, “would it all be reasoned out like that? Is hatred so logical? Dost thou think Claridge Pasha will not go now? The troops are ready at Wady-Halfa, everything is in order; the last load of equipment has gone. Will not Claridge Pasha find the money somehow? I will do what I can. My heart is moved to aid him.”

“Yes, you’d do what you could, pasha,” Lacey rejoined enigmatically, “but whether it would set the Saadat on his expedition or not is a question. But I guess, after all, he’s got to go. He willed it so. People may try to stop him, and they may tear down what he does, but he does at last what he starts to do, and no one can prevent him—not any one. Yes, he’s going on this expedition; and he’ll have the money, too.” There was a strange, abstracted look in his face, as though he saw something which held him fascinated.