His prudence restrained him until he emerged from the mountain proper into the foothills, when, knowing he was as strong as ever, he indulged in the exuberant outburst. Leaving his blanket upon the back of Whirlwind, but holding his rifle in one hand, Deerfoot leaped into the air, spun around first on one foot and then the other, sent his shapely legs flying seemingly in a dozen different directions at the same moment, swung his arms, bent his body, cavorted and made contortions that would have honored a professional acrobat. Not only that, but he punctuated the extravagant display by a series of whoops such as had nerved the Shawanoe warriors many a time to rush into battle. All this time Whirlwind stood calmly watching the performance. It is reasonable to believe he was interested, and had he possessed the power of laughter he would have thrown back his head and "cracked his sides" at the sight. What a pity that George and Victor Shelton could not have peeped out from some concealment. They would have remembered the picture all their lives. Only by this grotesque exercise could the young Shawanoe find vent for his overflowing spirits. There is nothing in all the world that can take the place of physical vigor and health--a truth which unnumbered thousands do not realize until too late. Temperance, right living, obedience to the laws of hygiene, and a clear conscience, never fail to bring their reward and to give to this life a foretaste of the blessed one to come. Deerfoot had chosen an open space, walled in by rocks, boulders and stunted undergrowth for his physical outburst. When the performance had gone on for some time, he danced up to the side of Whirlwind and planted one of his feet against his ribs so sharply that the stallion was forced back for a step. Instantly he wheeled, partly reared and struck at his insulter, but he was so afraid of hitting him that the blow was awkward and missed the Shawanoe by a goodly distance. As he dropped on his feet, Deerfoot darted under his belly and repeated the blow from the other side. The white teeth of the steed snapped within a few inches of the shoulder of the youth, who slapped the nose before it could be withdrawn. Whirlwind wheeled to face his master, who landed lightly on his back and pounded his sides with his heels. The contest recalled that other struggle between the two, months before on the prairie, when it was a battle royal indeed. But the great difference lay in the fact that the present one was good-natured on both sides, and it is easy to believe that the stallion wished the youth to prove himself once again his master. An intelligent animal loves to obey him who has proved his superiority.