'In another quarter of an hour they'll know all about it, Rube. It will take them as much more to get ready and put the dog on the track. They'll have some trouble in getting him to take up our scent with all that blood in the room. I should say we may fairly reckon on three-quarters of an hour before, they're well out of the camp.' 'That's about it,' Rube said. 'They will have to tie the dog, so as not to lose him in the darkness. They won't gain on us very fast for the next two hours; we can keep this up for that at a pinch. After that, if we don't strike water, we are done for.' 'We passed a stream yesterday, Rube; how far was it back?' 'About an hour after daylight. Yes, nearly three hours from camp. But we are going faster now than we did then. We ought to do it in two hours.' "After this we didn't say any more. We wanted all our breath. It was well for us we had both been tramping half our lives, and that our legs had saved our necks more times than once on the prairies. We were both pretty confident we could run sixteen miles in two hours. But we dared not run straight. We knew that if they found we were keeping a line, they would let the dog go their best pace and gallop alongside; so we had to zigzag, sometimes going almost back upon our own track. We did not do this so often as we should have done if we had had more time." "But how did you know which way to go, Seth," Hubert asked. "We went by the stars," Seth said. "It was easier than it would have been by day, for when the sun's right overhead, it ain't a very straightforward matter to know how you are going; but there would be no difficulty then to scouts like Rube and me. Well, we had run, maybe, an hour and a quarter when we heard a faint, short bark far behind." 'The brute is on our trail,' Rube said; 'they haven't given us so much start as I looked for. Another half-hour and he will be at our heels sure enough.' I felt this was true, and felt very bad-like for a bit. In another quarter of an hour the bark was a good bit nearer, and we couldn't go no faster than we were going. All of a sudden I said to Rube, 'Rube, I've heard them dogs lose their smell if they taste blood. Let's try it; it's our only chance. Here, give me a cut in the arm, I can spare it better than you can; you lost a lot to-night from that cut.' We stopped a minute. I tore off the sleeve of my hunting shirt, and then Rube gave me a bit of a cut on the arm. I let the blood run till the sleeve was soaked and dripping, then Rube tore off a strip from his shirt and bandaged my arm up tight. We rolled the sleeve in a ball and threw it down, then took a turn, made a zigzag or two to puzzle the brute, and then went on our line again. For another ten minutes we could hear the barking get nearer and nearer, and then it stopped all of a sudden. On we went, and it was half an hour again before we heard it, and then it was a long way off. 'I expect we're all right now, Seth,' Rube said.