Nothing was or could be more real to Deerfoot than the cause of the radiance that suffused his being when he came from the lodge of the Blackfoot chieftain. Science may try to explain such emotions as an exaltation resulting from physical causes, but no such explanation can suffice. We feel that which we feel and know that which we know. CHAPTER XXI. HOMEWARD BOUND. Despite the remarkable experiences of George and Victor Shelton in the Blackfoot village, they found, as the weeks and months passed, a monotony that deepened their homesickness and caused them to yearn for the day when they could start southward and leave the bleak region forever behind. The winters in that latitude are generally severe, and the brothers got a taste of cold weather such as they had never known on the other side of the Mississippi. There must have been repeated spells when, had a Fahrenheit thermometer been in existence, it would have shown a record of thirty and forty degrees below zero. People who are accustomed to such Arctic experiences know how to prepare for them, and Deerfoot and the boys would have been foolish had they neglected so plain a duty. With wood abundant on every hand, a bountiful supply was kept within the tepee and outside, and weeks passed without the fire being allowed to go out. With the soft, warm furs at command, no one of the three met with more than a brief discomfort because of the fearful cold. The chief cause of anxiety was the horses. All were provided with shelter and carefully looked after. A good deal of grass had been pulled and much cottonwood and willow bark laid in stock. If the animals could not fare sumptuously, they had enough to keep them in good condition. Fully half a dozen of the Blackfoot horses were frozen to death, and those belonging to our friends would have perished but for the care they received. They were screened by blankets during the unusually severe weather, and Whirlwind received the tenderest attention from Deerfoot. More than once the Shawanoe stole out of the tepee in the depth of the night and tramped over the snow through an atmosphere that was still and as biting as the teeth of a saw. No matter how silently the youth moved forward, the stallion discovered his approach and whinneyed his welcome. Then when the blizzards raged Deerfoot never forgot to call and assure himself that nothing was neglected that could shield the faithful creatures. Thus they were saved from harm until the weather moderated upon the approach of spring. With the snow lying several feet deep on the level and piled ten times higher among the mountains, Deerfoot and the boys hunted with their friends on snow-shoes. It was exhilarating, but the resistless cold took away much of the pleasure that otherwise would have come to the lads. As for the Shawanoe, summer and winter seemed alike to him.