Viewing page 103 of 500

This transcription has been completed. Contact us with corrections.

country of the world. Professor Holmes is proud of his record as a mountaineer, having been first to reach the summit in this and in every other ascent made during the Colorado work.
In 1878 the Survey again visited the Yellowstone region and Professor Holmes' work extended over a large part of the Park, his studies of the Grand Canyon being of very especial interest. It was determined that the great flows of lava, probably in glacial times had filled the narrow gorge of the river, which normally flowed to the North, turning it temporarily out of its course to the South. The glacial ice sweeping down from the North had scattered granite masses, derived from the Northern highlands over the plateaus to the South, completing the story. This interpretation was verified fifty years later (1928) by the researches of Professor R.M. Field, Chief of the Department of Geology, Princeton University, and Professor O.T. Jones, Head of the Department of Geology, University of Manchester, England, who spent the summer in the Grand Canyon region.
It happened in 1874 and 1875 that Professor Holmes' geological activities brought him into contact with the interesting archeological remains of Colorado. Studies were made of the Cliff dwellings and the associated art remains, and later corresponding researches were carried over many of the states and territories extending from the Atlantic to the Pacific, from New Jersey on the East to California on the West. His report to the Field Columbian Museum on his studies in connection with the A.V. Armour expedition in 1895 threw much new light upon the