XX Illustrations 
Alarcon’s Ships Struggling with the Great Bore of 
THE Colorado—1540 ....... 
Drawing by F. S. Dellenbaugh. 
Native Ladies of the Lower Colorado .... 
Freaks of Erosion. 
One of the Cocopa Giants. Height, 6 feet 4 inches 
The costume in early days was “nothing.” 
Photograph by Delaney Gill. 
Komohoats .......... 
A Pai Ute boy, S. W. Nevada. 
Photograph by J. K. Hillers, U. S. Geol. Survey. 
Professor McGee and a Group of Cocopas 
Originally the Cocopas wore no clothing. 
Photograph by Delaney Gill. 
The Colorado at the Junction of the Gila . 
Looking up stream, Gila right hand lower corner. Colorado about 500 
yards wide. 
Photograph by Delaney Gill. 
An Arizona Landscape. 
There are Navajo Gardens at the bottom of this canyon. 
Photograph by E. O. Beaman. 
Cocopa Tule Raft ... . 
Photograph by Delaney Gill. 
The Grand Canyon from Bright Angel Hotel 
Twelve miles to opposite rim. Total depth here between 5000 and 
6000 feet. 
Photograph by Hall. 
The Grand-Marble Canyon Region ..... 
Scale about 30 miles to the inch. This is not as accurate as the map 
opposite page 41, but is given as an aid to the understanding of 
that. Compare also map on page 12. 
The Work of Erosion. 
The Witch of Endor and Cerberus. 
Photograph by J. K. Hillers, U. S. Geol. Survey. 
The Work of Corrasion ....... 
Parunuweap Canyon of the Virgen River, Southern Utah. 20 to 30 feet 
wide and 1500 feet deep and 18 miles long. 
Photograph by J. K. Hillers, U. S. Geol. Survey. 
PAGE 
15 
18 
19 
20 
21 
24 
26 
29 
30 
33 
37 
38 
39 
