ILLUSTRATIONS 
PAGE 
Looking up the Bright Angel Trail . Frontispiece 
This is one of the modern trails into the Grand Canyon, which at this 
point is some 6000 feet deep. 
From water-colour sketch by Thomas Moran, N.A. 
Tapeets Creek ... . xviii 
Photograph by J. K. Hillers, U. S. Colo. Riv. Exp. 
Looking into the First Granite Gorge . . xxxvi 
Grand Canyon foot of Bright Angel Trail. Canyon 300 miles long. 
River 1000 feet below point of view. Total depth between 5000 
and 6000 feet. 
Photograph by Hall. 
In Glen Canyon ......... 
Walls of homogeneous sandstone. 
Photograph by J. Fennemore, U. S. Colo. Riv. Exp. 
On the Colorado River, Six Miles above Picacho . 
Photograph by Arthur P. Davis. 
The Inner Gorge of the Grand Canyon at the Foot of 
Toroweap ......... 
Depth from point of view about 3000 feet. Total depth about 4500 
feet. Width about 3500 feet from brink to brink. 
Negative 20x24 by J. K. Hillers, U. S. Geol. Survey. 
House Ruins on Cliff of Glen Canyon .... 
There were habitations also under the heavy top ledge. 
Photograph by J. Fennemore, U. S. Geol. Survey. 
Wytfliet-Ptolemy Map of 1597. 
From Bancroft’s History of Arizona and New Mexico. 
The Ancient Ruin on the Cliff. 
Glen Canyon. 
Photograph by J. Fennemore, U. S. Colo. Riv. Exp. 
Western Part United States .. 
Relief Map by E. E. Howell. 
Gulf of California at the Mouth of the Colorado 
Photograph by Delaney Gill. 
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