Again Jerry began to slacken his pace. "Cheer up, mate, cheer up!" cried Dick; "the Cossacks' lances are not within a good many inches of us yet, and it will be time enough to cry out when they get inside our waistcoats." Jack, though he might have gone faster than either of his men, would not leave them behind; if he sprang ahead, it was merely to have time to look round and ascertain how far off were their pursuers. He calculated that they were approaching the boat, and that if they shouted loudly Tom would bear them; once more he looked round; the horsemen were within a hundred yards of them; they might have stopped them with their carbines; possibly, however, they were unloaded, when they hurriedly threw themselves on horseback. Jack, as he sprang forward, felt the ground very soft beneath his feet, and recollected that they must have reached the marsh they had crossed on leaving the boat. To run across it seemed scarcely possible, as their feet had before sunk in every few yards they trod; there appeared to be no hope of escape. Just at this moment down came poor Jerry--who had for some few seconds been floundering along, though doing his best to keep up--with his face in the mud. "Go ahead, sir, go ahead!" cried Dick; "don't stop for us; I'll do my best to set Jerry on his legs." "I will not desert him," answered Jack, stooping to lift up the fallen seaman, while Dick lifted him up with the other arm, and quickly again set him on his feet. "Heave out that quid of mud from your mouth, and give your eyes a rub over, and you will be all to rights," said Dick; "don't say die yet; now on we go;" and suiting the action to the word, dragging Jerry along with him, they began moving forward in a "hop-skip-and-a-jump" fashion, which enabled them to get over the soft ground with tolerable rapidity. They were scarcely more than a quarter of the way across, when the Cossacks reached the edge of the marsh, of the existence of which they were apparently not aware, for, without pulling rein, they plunged in; the consequence being that, with the impetus they had attained, and the weight of their horses, they sank deep down in the soft mud. Jack, with infinite satisfaction, saw that they were floundering about, but he did not allow his companions to slacken their speed, for the horses would still, probably, be able to make their way across it. He, therefore, assisting to support Jerry, moved on as fast as his weight and the nature of the ground would allow. Jerry's fall, however, had given an advantage to their pursuers, who were now making their way across the morass, sometimes stopped by a soft portion, and again moving faster where the ground was comparatively firmer. Still the Cossacks had somewhat gained upon them, and were scarcely fifty yards off, when Tom's welcome shout reached their ears. "We see you, we see you; and we see your pursuers too!" he cried; "we've got our muskets ready to cover you."