As they had done more than fifty miles since the morning, and the horses were much distressed with the effect of the dust, it was resolved to encamp at once. The horses received a little water, and were picketed out to graze. The fire was soon lit, and the ducks cut up and spitted upon the ramrods. All were so much exhausted with the heat, the ashes, the fatigue, and the want of sleep of the previous night that, the tea and pipes finished and the watch posted, the rest lay down to sleep before the sun had been an hour below the horizon. All rose at daybreak, refreshed with their quiet night's rest, and were soon in the saddle and on their way northward. They had nearly an hour's ride before they came upon the trail. There it was unmistakably--at first sight as broad and as much trampled as the other; but after a careful examination of it there was but one opinion, namely, that the number of animals who had passed was decidedly less than those who had gone south. One of the Gauchos now told Mr. Hardy that he knew that at a short distance further to the west there was a spring of water much used by the Indians, and where he had no doubt they had halted on the night of the fire. Finding that it was not more than half an hour's ride, Mr. Hardy, after a brief consultation, determined to go over there to water the horses and breakfast, before retracing their footsteps across the burned prairie. In little over the time named they came to a small pool of bright water, from which a little stream issued, running nearly due north across the plain. After drinking heartily themselves, and filling the water-skins and kettle, the horses were allowed to drink; and Dash plunged in with the greatest delight, emerging his usual bright chestnut color, whereas he had gone into the water perfectly black. After he had come out and had shaken himself, he commenced hunting about, sniffing so violently that Hubert's attention was attracted to him. Presently the dog ran forward a few paces and gave a sharp bark of pleasure, and Hubert, running forward, gave so loud a cry that all the party rushed up. Hubert could not speak. There, half-buried in the ground, and pointing west, was an Indian arrow, and round the head was twisted a piece of white calico, with little blue spots upon it, which Mr. Hardy instantly recognized as a piece of the dress Ethel had worn when she left home.