Burnet and the Arab had just reached the wall when the air shook and the earth trembled with a tremendous explosion. A few moments later the Turkish officer, bare-headed and without his tunic, came rushing from his tent, and ran down the slope, closely followed by the sentry. They passed the two lurking figures within a few feet. Burckhardt had not yet appeared, and a sudden idea flashed into Burnet's mind. There was no need of further hiding. He went quickly forward, passed between the two colossal figures, and in the lurid glare saw the burly major hurrying down from his tent beyond. He was without his spectacles, and Burnet's figure, dark against the glowing sky, might well have been mistaken for that of a Turkish officer. [Illustration: MAJOR BURCKHARDT IS DISTURBED] "What--what is happening?" panted the major, in Arabic. Burnet felt that the enemy was delivered into his hands. "You are my prisoner, Major Burckhardt," said Burnet in English. Utterly bewildered, the German dropped his hands to his sides, and stood speechless, staring with his short-sighted eyes at the young officer before him. He was incapable of resistance; started a little when Burnet addressed his companion in Arabic, but accompanied the Arab meekly when the man bade him march. Burnet lifted the slab, called the two Arabs from below, and with them in a few minutes overtook the prisoner and his escort. Hurrying Burckhardt along, they crossed the _tell_, descended the slope on the south-west side, and almost ran into a picket of Turks who were dashing towards the conflagration. The whole countryside was now lit up, and the non-commissioned officer in the rear of the group, catching sight of Burnet's uniform, shouted to his men. They paid no heed to his cry, and seeing himself deserted, the sergeant redoubled his pace and followed them up. Burnet had no doubt that, as soon as the man made himself understood in the confusion, a party of the enemy would be dispatched in pursuit, but he trusted that the Turks would be for a time too busily occupied to heed the incredible report. Still, there was need for haste. The rim of the moon was just thrusting itself above the horizon. If the horses were not reached before the pursuit began there was great danger of being run down. Burckhardt had now recovered the use of his tongue, and was complaining bitterly at being compelled to trot across damp ground in his slippers and pyjamas. "It is contrary to the usages of war," he declared. "There shall be an indemnity." "All in good time, major," said Burnet consolingly. "You shall be fitted out in Arab dress before long: that will be no novelty to you." "What? You know me, and my work, and you treat me with such indignity!" "Well, you know, you once bundled my father, according to your own account, ignominiously from the _tell_ of Tukulti-Ninip. This is only a mild reprisal." "Who then are you?" "I am the son of Mr. Burnet."