Indeed, they had not advanced more than a hundred paces farther, when the traces of three Indians became distinctly visible in the leaves and soft vegetable mold of the woods--as if they who had left them there had thought that as they had thus far so completely concealed their trail they might thenceforth proceed with less circumspection, as now quite beyond the risk of pursuit. On closely inspecting the foot-prints, Burl knew by certain signs--such as the unusual slenderness of one and the mark of a patched moccasin in the other--that two of them had been left by feet whose traces he had examined at the corn-field fence. The third foot-print he had not seen that day, he was sure, nor its like until that moment, never in all his border experience. It was the longest and, excepting his own, the broadest foot-print he had ever seen, and must have been left there by the tread of a giant. The individual, then, who had captured his little master, and had him now in keeping, might not be of this party; and so far as concerned the main object of this their solitary adventure, they might, after all, be on a cold trail. Nevertheless, they pushed on with speed and spirit. They had not proceeded more than a furlong farther, when Grumbo stopped short, and giving a double sniff uttered a quick, low yelp both of surprise and joy, so it seemed, which said, as plainly as words could have said it, "Halloo! what's this?" Then, after another quick sniff or two, looking up at his master and expressing himself by wag of tail and glance of eye, he added: "Good luck in the wind ahead." That Grumbo had actually expressed this much may fairly be inferred from Burl's answer: "O you's got a sniff of our pore little master's sweet little feet, has you, at las'? Well, we kin foller our noses now an' know whar we gwine."