xxxii Illustrations 
Glen Canyon, Sentinel Rock. 
Between the Crossing of the Fathers and Lee’s Ferry ; about 300 feet 
high. 
Photograph by E. O. Beaman, U. S. Colo. Riv. Exp. 
The Grand Canyon ........ 
Cliffs opposite the mouth of Diamond Creek. The highest point 
visible is about 3500 feet above the river. 
Photograph by T. H. O’Sullivan, Wheeler Exp. 
The Beginning of a Natural Arch. 
Photograph by C. R. Savage. 
The Grand Canyon .. 
Near mouth of Diamond Creek. 
Photograph by T. H. O’Sullivan, Wheeler Exp. 
The Crew of the “Trilobite” . . . . . 
At the mouth of Diamond Creek. 
Photograph by T. H. O’Sullivan, Wheeler Exp. 
The Dining-table in Camp. 
Dutch oven, left foreground. 
Photograph by F. S. Dellenbaugh. 
Winter Headquarters at Kanab, 1872-3 
Photograph by J. K. Hillers. 
The Uinkaret Mountains at Sunset, from the North¬ 
east .......... 
Mt. Trumbull in middle, Mt. Logan in the far distance. 
Oil sketch by F. S. Dellenbaugh. 
Major Powell and a Pai Ute. Southern Utah, 1872 . 
Photograph by J. K. Hillers, U. S. Colo. Riv. Exp. 
The Expedition Photographer in the Field . 
Photograph by J. K. Hillers, U. S. Geol. vSurvey. 
Lake on the Aquarius Plateau . . . . . 
Photograph by J. K. Hillers, U. S. Colo. Riv. Exp. 
Butte in Grand Gulch ....... 
A tributary of the San Juan. 
Photograph by Charles Goodman. 
Repairing Boat near Mouth of Fremont River on the 
Colorado, 1872. 
Photograph by J. Fennemore, U. S. Colo. Riv. Exp. 
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