There was a part of the plateau which was invisible from the plain, and here in feverish haste they built a little cairn. Many flaky slabs of stone were lying about, and it did not take long to prop the largest of these against a rock, so as to make a lean-to, and then to put two side-pieces to complete it. The slabs were of the same colour as the rock, so that to a casual glance the hiding-place was not very visible. The two ladies were squeezed into this, and they crouched together, Sadie’s arms thrown round her aunt. When they had walled them up, the men turned with lighter hearts to see what was going on. As they did so there rang out the sharp, peremptory crack of a rifle-shot from the escort, followed by another and another, but these isolated shots were drowned in the long, spattering roll of an irregular volley from the plain, and the air was full of the phit-phit-phit of the bullets. The tourists all huddled behind the rocks, with the exception of the Frenchman, who still stamped angrily about, striking his sun-hat with his clenched hand. Belmont and Cochrane crawled down to where the Soudanese soldiers were firing slowly and steadily, resting their rifles upon the boulders in front of them. The Arabs had halted about five hundred yards away, and it was evident from their leisurely movements that they were perfectly aware that there was no possible escape for the travellers. They had paused to ascertain their number before closing in upon them. Most of them were firing from the backs of their camels, but a few had dismounted and were kneeling here and there--little shimmering white spots against the golden back-ground. Their shots came sometimes singly in quick, sharp throbs, and sometimes in a rolling volley, with a sound like a boy’s stick drawn across iron railings. The hill buzzed like a bee-hive, and the bullets made a sharp crackling as they struck against the rocks. “You do no good by exposing yourself,” said Belmont, drawing Colonel Cochrane behind a large jagged boulder, which already furnished a shelter for three of the Soudanese. “A bullet is the best we have to hope for,” said Cochrane grimly. “What an infernal fool I have been, Belmont, not to protest more energetically against this ridiculous expedition! I deserve whatever I get, but it _is_ hard on these poor souls who never knew the danger.” “I suppose there’s no help for us?” “Not the faintest.” “Don’t you think this firing might bring the troops up from Halfa?” “They’ll never hear it. It is a good six miles from here to the steamer. From that to Halfa would be another five.” “Well, when we don’t return, the steamer will give the alarm.” “And where shall we be by that time?” “My poor Norah! My poor little Norah!” muttered Belmont, in the depths of his grizzled moustache. “What do you suppose that they will do with us, Cochrane?” he asked after a pause.