He had not traveled many hours when a heavy mist set in, accompanied by a keen and driving rain, in his face. With his head bent down, Harry rode along, paying less attention than usual to his way. The mist grew thicker and thicker. The horse no longer proceeded at a brisk pace, and presently came to a stop. Harry dismounted, and discovered that he had left the road, Turning his horse's head, and taking the reins over his arm, he tried to retrace his steps. For an hour he walked along, the conviction growing every moment that he was hopelessly lost. The ground was now soft and miry and was covered with tussocks of coarse grass, between which the soil was black and oozy. The horse floundered on for some distance, but with such increasing difficulty that, upon reaching a space of comparatively solid ground, Harry decided to take him no further. The cold rain chilled him to the bone, and after awhile he determined to try and make his way forward on foot, in hopes of finding, if not a human habitation, some walls or bushes where he could obtain shelter until the weather cleared. He fastened the reins to a small shrub, took off the saddle and laid it on the grass, spread the horse rug over the animal to protect it as far as possible, and then started on his way. He had heard of Irish bogs extending for many miles, and deep enough to engulf men and animals who might stray among them, and he felt that his position was a serious one. He blamed himself now for not having halted immediately he perceived that he had missed the road. The only guide that he had as to the direction he should take was the wind. On his way it had been in his face, and he determined now to keep it at his back, not because that was probably the way to safety, but because he could see more easily where he was going, and he thought by continuing steadily in one direction he might at last gain firm ground. His view extended but a few yards round him, and he soon found that his plan of proceeding in a straight line was impracticable. Often quagmires of black ooze, or spaces covered with light grass, which were, he found, still more treacherous, barred his way, and he was compelled to make considerable detours to the right or left in order to pass them. Sometimes widths of sluggish water were met with. For a long time Harry continued his way, leaping lightly from tuft to tuft, where the grass grew thickest, sometimes wading knee-deep in the slush and feeling carefully every foot lest he should get to a depth whence he should be unable to extricate himself. Every now and then he shouted at the top of his voice, in hopes that he might be heard by some human being. For hours he struggled on. He was now exhausted with his efforts, and the thickening darkness told him that day was fading. From the time he had left his horse he had met with no bush of sufficient height to afford him the slightest shelter.