Glacier National Park embraces an area of 1,534 square miles in northwestern Montana along the main range of the Rockies. The region is extremely rugged and consists of a great mass of abrupt peaks, separated by deep valleys. On the north the Park adjoins Alberta and British Columbia; to the east lie the prairies of the Blackfoot Indian Reservation, and to the west the forests of the Flathead Valley. The Continental Divide traverses the Park. The streams of the west slope reach ultimately the Columbia River, and those of the east slope drain partly into the Missouri River and partly into Hudson Bay. The highest peaks attain an altitude of little more than 10,000 feet, but the surrounding country is comparatively low-3,170 feet on the west slope and 4,800 feet on the east slope-so that the mountains are quite as imposing in appearance as the more elevated peaks of the southern Rockies. The rocks are stratified and of