DAVIS: THE GRAND CANYON OF THE COLORADO. 17 
to the fault beneath the valley floor and to the great cliffs of the Shivwits 
plateau bordering the valley on the east. 
Hurricane Ledge: “It is related that a storm overtook a party of 
Mormon officials while attempting to explore a route for a wagon road 
up a gulch which comes down from the upper country, and hence its 
name” (Powell, a, p. 187). The same name is given to the fault which 
determines the “ledge ” or cliffs along the western border of the Uinkaret 
plateau. 
Kaibab: “ Mountain lying down ” (Powell, a, p. 185). The highest 
plateau bordering the Grand canyon. 
Kanab: “Willow” (Powell). Name of a tribé, a creek, a plateau, a 
canyon through its middle, and a town on the creek. 
Paria: “The Ute name for elk” (Dutton, a, p. 253). A Triassic 
plateau east of the Kaibab, and a creek and canyon in it. 
Shindrump: “Capping the cliffs, we find conglomerate, over which 
are scattered many fragments of silicified wood, known to the Indians 
as the arrows of Shin-au’-av, or Shin-ar’-ump” (Powell, a, p. 190). 
“The weapons of Shinav, the wolf-god ” (Dutton, a, p. 147). A con- 
glomeratic sandstone at the bottom of the Trias. 
Shi’-vwits: Shiv signifies spring ; Shivwits, the people of the springs 
(Powell). This word is spelled Shiwits, Sheavwits, Scheavwits, in various 
reports ; the spelling here adopted being given by Powell (a, p. 128). 
The westernmost of the blocked plateaus. 
Tonto: Spanish name of an Indian tribe, meaning “fool ;” given by 
Gilbert to the basal sandstones of the Palzeozoic series. 
Toro’weap : “ A clayey locality ” (Dutton, a, p. 30). The valley be- 
tween the Uinkaret and Kanab plateaus, probably so named from the 
fine silt deposited on the valley floor back of Vulcan’s throne. 
Uinka'ret: ‘‘ Pine mountains” (Powell, p. 199). One of the blocked 
plateaus, capped with many volcanic cones and flows. 
The chief features of the district are shown on eight sheets of the 
topographical map published by the United States Geological Survey : 
St. Thomas and Camp Mohave, Nev., Mt. Trumbull, Kaibab, Echo 
cliffs, Diamond creek, Chino, San Francisco mountain, Ariz. 
Geological maps are given in Dutton’s reports on the High plateaus 
and on the Grand canyon. 
The drawings from which the illustrations of this article are repro- 
duced can make no claim to accuracy of detail. They are made up 
from hasty sketches in which but little more than an outline was re- 
