Down the slope, then, he rode, the horse’s breath leaving a trail of vapour in the cold air. The sky was growing blacker, the wind, which had been blowing in gusts, dropped; there was no sound but the soft glugging of the hoofs as they plunged into the snow. Suddenly Bob heard a faint shout behind him. He knew well what it meant; the Cossacks had reached the crest of the hill and seen him cantering before them. He looked over his shoulder; they were no more than a mile distant. In half an hour they would close in upon him; perhaps the second band had already come round upon his flank and was now ahead of him; for all he knew, he might have been riding in a circle. Still he must ride on. He quickened his horse’s pace; some ten minutes later he heard the distant crack of shots, but as no ping of the bullets followed he guessed that they had flown wide. But the fact that the Cossacks were firing was ominous. They were accustomed to take flying shots from the backs of their steeds; at any moment a luckily-aimed bullet might hit him. He lay upon the horse’s neck and called upon the beast to gallop. More shots, more shouts pursued him, but the sounds were fainter. The gap between him and the Cossacks must be widening; could the advantage be maintained? He spoke encouragingly to the animal, which galloped along with wonderful sure-footedness. Suddenly Bob felt a damp, cold dab upon his brow, then another; he lifted his head, and gave a quick gasp of relief when he saw that snow was falling. The lowering sky had opened at last; in a few moments the rider was making his way through a dense shower of whirling snowflakes, which filled eyes and ears and shut out all objects beyond a hundred yards. By favour of this white screen he might yet escape. To the left he saw a small dark clump of trees stretching up the hillside. Pushing on until he came level with the furthermost edge he wheeled round, struck through the fringe of the clump where the trees were thin, and ascended the hill at right angles to his former course, in hope that his pursuers, losing him from sight, might overshoot the spot where he diverged before they discovered their mistake. The blinding fall of snow must now be fast obliterating his tracks; to distinguish them the Russians would have to slacken speed; and the few minutes he thus gained might enable him to escape them altogether. But he dared not wait; the Cossacks, finding that they failed to overtake him, would soon cast back and probably scatter in the direction they would guess him to have taken, and how could he expect to elude them all? Walking his horse for a few minutes to allow it to recover breath, he again urged it on, hoping that his luck would yet serve.