Charles Doolittle Walcott

“ The study of the arched block of strata 16,000 feet or more in thickness from which the picturesque and impressive mountains and canyons have been carved has resulted in the discovery that the rocks in which the great Bow Valley is excavated form a part of the North American continental beds that were deposited in great fresh-water lakes before the waters of the ocean swept over the continent and began their task of depositing the 12,000 feet or more in thickness of rocks of Cambrian age that now contain the remains of the marine life of that period. ”

“ R. G. McConnell in 1886 resulted in a more accurate description of the thousands of feet in thickness of sandstone, shale, and limestone that had been arched and broken before being dissected and laid to view by the agents of erosion which formed the canyons, cliffs, and mountains by removing grain by gain or by chemical solution the material that formerly occupied or surrounded them. ”

“ On the east side of the Lower Yoho Valley the limestones of Mount Ogden are lying nearly level, but on the eastern slope above Sherbrooke Lake Canyon the same beds are turned down at right angles and disappear beneath the canyon bottom. ”

“ That it was prepared to assert its right to the control of the Cambrian sea is shown by the claws with which it was armed.
To the geologist interested in the volcanic rocks a great field is waiting in the Selkirks to the west, and for generations to come there will be unsolved problems for the special student in this great region of mountains, glaciers, and rivers. ”

“ The film moves past a vertical half-inch aperture from right to left as the camera is revolving from left to right. With this instrument a view can be taken 81⁄2 inches in height and of any desired length up to 10 feet. Two persons can readily carry the outfit anywhere that one can ordinarily climb. Under unusually difficult conditions the camera can be drawn up by a rope. ”