Soon it was evident that a harnessed buffalo was no match for free buffalo. Duke's outfit was being left; buffalo after buffalo passed it, until presently Duke and Jenny and the cart were traveling alone. But they kept going, on a stampede of their own, imitating the insensate herd. "Darn that Duke!" panted Terry. And he shouted: "Sic', Shep! Turn 'em! Sic', sic'! Catch 'em, boy!" Shep darted gaily. He fairly tore through the brush. Now he had reached the cart--and now he was barking alongside the crazy team. Would he do it? _Could_ he do it? Yes, he was trying to head them. He had gained the front; yapping, darting, snapping, he was crossing back and forth before Duke's nose. Down lower dropped Duke's burly head; he charged; Shep dodged, and returned. The cart swung and tilted, and out was bounced the cask of sauerkraut. "Hurrah!" cheered Harry. On at a tangent lumbered Duke and Jenny--Shep was bothering them seriously--and out bounced the water keg. "Great Scott!" gasped Harry. "Don't let's lose that keg!" "Shep'll stop 'em! Shep'll stop 'em!" panted Terry. "Hurrah!" His throat was tight, his heart thumped tremendously, his legs were like lead, but he had hopes. Shep knew his business of turning cattle. Now wherever the enraged and frantic Duke headed, the pesky, yapping, snapping dog was under his nose. Jenny was growing tired of being dragged hither-thither; she detested dogs, and she despised buffalo, tame or wild. Duke, at his wits' end, and tired also, stopped short; she stopped; Duke pawed and shook his locks and rumbled, keen yet for just one good chance at his tormentor--and Shep, sitting down, with tongue dripping, held the way. There they were when, breathless, Terry and Harry arrived, to scold the runaways, to praise Shep, and to take stock of damages. "Not a thing broken, is there?" pronounced Harry, still panting, after the hasty survey. And that appeared to be the case. Of course, the stuff inside the cart was pretty well jumbled; but the frame and wheels seemed all right, and the harness was whole, and only Duke and Jenny themselves were the worse for wear. Their drooping heads and heaving flanks proclaimed that they had run quite far enough. So, thought Terry, had he and Harry. He felt as though he had run a mile or more. Whew! "All's well that ends well," asserted Harry, regaining his spirits. Nothing downed Harry. "Now, first thing to do is to get that keg of water. But I don't suppose we'll ever find the trail. The buffalo must have tramped it out--and we're away off the track, anyway. Shucks!" "Where is the keg?" asked Terry, peering. "There it is--that first dot. See? The gunny sacks are beyond, and the sauerkraut last. Let's turn the critters about. You bring them on and I'll go ahead. Maybe something else was jounced out."