Upon the advance to Cairo Edgar had been accompanied by the sheik and his son with a score of their followers. The information that they were enabled to give the general was of the greatest importance and value. The sheik was intimately acquainted with every foot of the ground, and on the force halting in the afternoon he was able to inform the quartermaster-general of the most likely spot for the next camping-ground, and of the distance and nature of the country to be traversed. At daybreak he would start ahead with his party, ascertain from the inhabitants of the villages whether any bodies of the enemy were in the neighbourhood, and arrange with them to forward such supplies of food and vegetables as remained at their disposal for sale, to the spot selected for the camping-ground that afternoon.