However, let them reach and carry El Obeid without too great delay, and all would yet be right. Their assurance to the men concerning the wells was verified; and when they approached the mud-holes which bore that name, discipline for once broke down. First the Bashi-Bazooks urged their fainting steeds to a gallop; then the infantry broke from their ranks and hurried forward; and had the enemy come down in force at that moment, they would have had an easy prey. But, oh horror! The puddles were choked with the putrefying bodies of men, horses, and camels, who, wounded in a recent fight near the spot, had crawled hither to drink, and die. Thirst, however, overcame disgust; the contaminating carcases were dragged away, and many plunged their faces in the filthy pools. Others had the self-control to dig or scrape holes for themselves, and wait till a purer water had percolated into them, when they slowly satisfied themselves and their faithful horses, and then managed to collect a supply for the next march. Wonderful was the effect of the water, when at last a sufficiency for all had trickled out. The musicians found their instruments, and played once more; the outposts stepped off to their stations with alacrity; and all felt as if El Obeid had already fallen. But several days' more terrible marching, with insufficient water, and many a death from sheer hardships, fatigue, or sunstroke, were to elapse before they neared the fortress. At last, however, the time came when, on starting at dawn, the guide assured the General that he should see the sun set behind its walls. After four hours' march one of the senior officers called Harry. "You and your nag look pretty fit," he said; "that comes of being a light weight. Is your water-bottle full?" "Yes," replied Harry; "I have not touched it since we left the last wells." "That is right; I want you to take six men out scouting. You see that rocky hill, with trees, out to the north?" "Yes." "The General wants to know if the enemy are behind there in any force. Go cautiously; and if you see no one, pass through the wood, and have a look on the other side of the hill; you can see from here that it cannot be very extensive on the top. But if you find Arabs in the cover, try to draw them; and if you succeed, and they are in force, come back at once. But should they keep in cover, so that you cannot tell whether there are half a dozen or a considerable body, skirt round the hill, and see if there is any sign of a camp, or a large body of the enemy concealed by it. Be cautious, so as not to get cut off. I have selected six of the best mounted Bashi-Bazooks, in case you have to make a bolt for it. Of course, you see the importance of knowing what we have in our rear before attacking the place." "All right, sir," said Harry; and in another minute he was trotting across the plain, followed by his six picturesque, irregular horsemen.