The volume of fire increased so rapidly that soon I could not distinguish individual shots; there was one continuous grumbling rumble, and suddenly whatever doubt I had was swept away, for I heard the tut-tut-tut-tut of a Maxim—faint but unmistakable. That settled the question. Griffiths shouted: "They’ve come, sir; that’s their Maxim," and a moment later, to make still more certain, a sudden flash of flame burst out among those boulders at the bottom of the "coffee-cup" and the noise of a bursting shell came bellowing up to us. I found myself waving my arms and cheering; the others were doing the same. Some vultures which had remained indifferent to the noise of rifle firing flapped heavily up from below. The camel-leaders were peeping down to see what was happening; the camels themselves showed no signs of alarm. Several more shells bursting there in quick succession so filled the hollow beneath us with smoke that we could see nothing until, very leisurely, the white cloud began drifting upwards, clinging to projecting rocks in little eddies, just like the morning mist in some deep valley before the sun has quite driven it away. Eventually we could actually smell that powder smoke as it escaped over the "rim" of the "coffee-cup", and it was the most beautiful scent we could wish for. Good little nine-pounder! I’d often seen it on the _Intrepid’s_ poop. The noise of the firing continued without cessation, rising and falling in fierceness, and although we could still hear shells bursting we could not see them. Probably those first few had been fired before the _Intrepids_ knew where the Arabs lay concealed. Occasionally a different sound came up to us—the puff of a bursting shrapnel—and as I pictured the little balls flinging themselves down among the rocks, and finding out the defending Arabs, I wondered how long they would stand such a trial. The worst of it was that we could take no part. Those Arabs who had come back with their sheikh—and the rear-guard, too—had probably wormed their way out of the hollow and were taking part in the defence. There was no one for us to fire at. A few of the camel-leaders were in view, though, as they were unarmed, we did not waste ammunition on them. All five of us had ceased fire and were listening to the noise of fighting. We tried to distinguish some difference between the Arab firing and the shots from our own people, but that screen of rocks seemed to muffle them and make this impossible. We could not even tell whether the rattle of the Maxim was getting nearer to us; nor could we distinguish the firing of the nine-pounder at all. Whether hours seemed minutes or minutes hours I could not tell. All I did know was that we were not helping, and that it might be impossible for the _Intrepid’s_ people to dislodge the Arabs. What could we do to compel some of them to come back? I racked my brains but could think of nothing.