Ray's footfall is soft as a kitten's as he creeps out upon the prairie; Dandy stepping gingerly after him, wondering but obedient. For over a hundred yards he goes, until both up- and down-stream he can almost see the faint fires of the Indians in the timber. Farther out he can hear hoof-beats and voices, so he edges along westward until he comes suddenly to a depression, a little winding "cooley" across the prairie, through which in the early spring the snows are carried off from some ravine among the bluffs. Into this he noiselessly feels his way and Dandy follows. He creeps along to his left and finds that its general course is from the southwest. He knows well that the best way to watch for objects in the darkness is to lie flat on low ground so that everything approaching may be thrown against the sky. His plain-craft tells him that by keeping in the water-course he will be less apt to be seen, but will surely come across some lurking Indians. That he expects. The thing is to get as far through them as possible before being seen or heard, then mount and away. After another two minutes' creeping he peers over the western bank. Now the fires up-stream can be seen in the timber, and dim, shadowy forms pass and repass. Then close at hand come voices and hoof-beats. Dandy pricks up his ears and wants to neigh, but Ray grips his nostrils like a vise, and Dandy desists. At rapid lope, within twenty yards, a party of half a dozen warriors go bounding past on their way down the valley, and no sooner have they crossed the gulley than he rises and rapidly pushes on up the dry sandy bed. Thank heaven! there are no stones. A minute more and right in front of him, not a stone's throw away, he hears the deep tones of Indian voices in conversation. Whoever they may be they are in the "cooley" and watching the prairie. They can see nothing of him, nor he of them. Pass them in the ten-foot-wide ravine he cannot. He must go back a short distance, make a sweep to the east so as not to go between those watchers and the guiding fires, then trust to luck. Turning stealthily he brings Dandy around, leads back down the ravine for some thirty yards, then turns to his horse, pats him gently one minute; "Do your prettiest for your colors, my boy," he whispers; springs lightly, noiselessly to his back, and at cautious walk comes up on the level prairie, with the timber behind him three hundred yards away. Southward he can see the dim outline of the bluffs. Westward--once that little arroyo is crossed--he knows the prairie to be level and unimpeded, fit for a race; but he needs to make a detour to pass the Indians guarding it, get away beyond them, cross it to the west far behind them, and then look out for stray parties. Dandy ambles lightly along, eager for fun and little appreciating the danger. Ray bends down on his neck, intent with eye and ear. He feels that he has got well out east of the Indian picket unchallenged, when suddenly voices