When the temperature fell, we stopped and unhitched our horses, tying them with long ropes to the wheels, while we got under the wagons—just in time. The sky became dark and we heard the distant roar of falling hail. Then the storm broke with lightning and thunder, and a deluge of hail that covered the ground. Heavy clouds enveloped us all the way to the summit of the Hudson Bay Divide. But on the other side, the northern slope, it was a glorious day with the sun shining in a clear sky. Before us lay a vast expanse of grass-covered prairie, level to the horizon; west was the main range of the Rocky Mountains, peak after peak, snow-capped and snow-mantled, stretching northward out of sight. Descending from the divide, we entered a broad and fertile valley, where our trail led along a shallow stream. At the head of this valley rose the sharp peak of Chief Mountain, 4000 feet above the surrounding plain, and an altitude of 9056 feet above the sea. It is a lone citadel of rock, an eastern spur of the Rocky Mountains, a landmark of the international boundary line between Canada and the United States. The Indians named it “Chief,” because they could see it so far from the plains. It overlooked the Old North Trail of the Indians, which ran north and south along the foot of the Rockies. In those days of long ago, what sights could have been seen from the precipitous slopes of Chief Mountain—great herds of buffalo and graceful antelope, deer, wapiti and moose, and bands of primitive red men moving north and south over the broad plateaus and along the foothills of the Rocky Mountains. We came that night to a broad stream called Green Banks by the Indians (St. Mary’s River), and camped near the lodge of an old medicine man named Spotted Eagle, a friend of Mad Wolf, my Indian father. He had a wrinkled, merry old face, with gray hair which was separated into braids over his shoulders by bands of otter-skin. I found him lying on a couch of robes and blankets fanning himself with the wing of an eagle. The day was warm and he was naked except for a loin-cloth. When I entered, he gave an odd exclamation of surprise, intended to be humorous. Then he sat up, and made his toilet, shaving by pulling the straggling gray hairs from his wrinkled face with a pair of small tweezers, and combing his hair with the bristly tail of a porcupine; and all the time he talked.