Sharraf delayed to come until the third morning, but then we heard him loudly, for the Arabs of his raiding force fired slow volleys of shots into the air, and the echoes were thrown about the windings of the valley till even the barren hills seemed to join in the salute. We dressed in our cleanest to go and call on him. Auda wore the splendours he had bought at Wejh: a mouse-coloured greatcoat of broadcloth with velvet collar, and yellow elastic-sided boots: these below his streaming hair and ruined face of a tired tragedian! Sharraf was kind to us, for he had captured prisoners on the line and blown up rails and a culvert. One piece of his news was that in Wadi Diraa, on our road, were pools of rain-water, new fallen and sweet. This would shorten our waterless march to Fejr by fifty miles, and remove its danger of thirst; a great benefit, for our total water carriage came to about twenty gallons, for fifty men; too slender a margin of safety.

Next day we left Abu Raga near mid-afternoon, not sorry, for this beautiful place had been unhealthy for us and fever had bothered us during our three days in its confined bed. Auda led us up a tributary valley which soon widened into the plain of the Shegg — a sand flat. About it, in scattered confusion, sat small islands and pinnacles of red sandstone, grouped like seracs, wind-eroded at the bases till they looked very fit to fall and block the road; which wound in and out between them, through narrows seeming to give no passage, but always opening into another bay of blind alleys. Through this maze Auda led unhesitatingly; digging along on his camel, elbows out, hands poised swaying in the air by his shoulders.

There were no footmarks on the ground, for each wind swept like a great brush over the sand surface, stippling the traces of the last travellers till the surface was again a pattern of innumerable tiny virgin waves. Only the dried camel droppings, which were lighter than the sand and rounded like walnuts, escaped over its ripples.

They rolled about, to be heaped in corners by the skirling winds. It was perhaps by them, as much as by his unrivalled road-sense, that Auda knew the way. For us, the rock shapes were constant speculation and astonishment; their granular surfaces and red colour and the curved chiselling of the sand-blast upon them softened the sunlight, to give our streaming eyes relief.

In the mid-march we perceived five or six riders coming from the railway. I was in front with Auda, and we had that delicious thrill: fiend or enemy?’ of meeting strangers in the desert, whilst we circumspectly drew across to the vantage side which kept the rifle-arm free for a snap shot; but when they came nearer we saw they were of the Arab forces. The first, riding loosely on a hulking camel, with the unwieldy Manchester-made timber saddle of the British Camel Corps, was a fair-haired, shaggy-bearded Englishman in tattered uniform. This we guessed must be Hornby, Newcombe’s pupil, the wild engineer who vied with him in smashing the railway. After we had exchanged greetings, on this our first meeting, he told me that Newcombe had lately gone to Wejh to talk over his difficulties with Feisal and make fresh plans to meet them.

Newcombe had constant difficulties owing to excess of zeal, and his habit of doing four times more than any other Englishman would do; ten times what the Arabs thought needful or wise. Hornby spoke little Arabic; and Newcombe not enough to persuade, though enough to give orders; but orders were not in place inland. The persistent pair would cling for weeks to the railway edge, almost without helpers, often without food, till they had exhausted either explosives or camels and had to return for more. The barrenness of the hills made their trips hungry for camels, and they wore out Feisal’s best animals in turn. In this Newcombe was chief sinner, for his journeys were done at the trot; also, as a surveyor, he could not resist a look from each high hill over the country he crossed, to the exasperation of his escort who must either leave him to his own courses (a lasting disgrace to abandon a companion of the road), or founder their own precious and irreplaceable camels in keeping pace with him. ‘Newcombe is like fire,’ they used to complain; Tie burns friend and enemy’; and they admired his amazing energy with nervous shrinking lest they should be his next friendly victims.

Arabs told me Newcombe would not sleep except head on rails, and that Hornby would worry the metals with his teeth when gun-cotton failed. These were legends, but behind them lay a sense of their joint insatiate savagery in destroying till there was no more to destroy. Four Turkish labour battalions they kept busy, patching culverts, relaying sleepers, jointing new rails; and gun-cotton had to come in increasing tons to Wejh to meet their appetites. They were wonderful, but their too-great excellence discouraged our feeble teams, making them ashamed to exhibit their inferior talent: so Newcombe and Hornby remained as individualists, barren of the seven-fold fruits of imitation.

At sunset we reached the northern limit of the ruined sandstone land, and rode up to a new level, sixty feet higher than the old, blue-black and volcanic, with a scattered covering of worn basalt-blocks, small as a man’s hand, neatly bedded like cobble paving over a floor of fine, hard, black cinder-debris of themselves. The rain in its long pelting seemed to have been the agent of these stony surfaces by washing away the lighter dust from above and between, till the stones, set closely side by side and as level as a carpet, covered all the face of the plain and shielded from direct contact with weather the salty mud which filled the interstices of the lava flow beneath. It grew easier going, and Auda ventured to carry on after the light had failed, marching upon the Polar Star.

It was very dark; a pure night enough, but the black stone underfoot swallowed the light of the stars, and at seven o’clock, when at last we halted, only four of our party were with us. We had reached a gentle valley, with a yet damp, soft, sandy bed, full of thorny brushwood, unhappily useless as camel food. We ran about tearing up these bitter bushes by the roots and heaping them in a great pyre, which Auda lit. When the fire grew hot a long black snake wormed slowly out into our group; we must have gathered it, torpid, with the twigs. The flames went shining across the dark flat, a beacon to the heavy camels which had lagged so much to-day that it was two hours before the last group arrived, the men singing their loudest, partly to encourage themselves and their hungry animals over the ghostly plain, partly so that we might know them friends. We wished their slowness slower, because of our warm fire. In the night some of our camels strayed and our people had to go looking for them so long, that it was nearly eight o’clock, and we had baked bread and eaten, before agai............