ILLUSTRATIONS. 
Pirate XXXVII. A, Typical desert valley of northwestern Arizona; B, — 
untains, Ariz 
of desert plain on west side of Hualpai Mo 
XXXVIII. A, A water bottle in the desert; B, Barrel cactus, or vianaga. 
XXXIX. Desert at Fenner, Cal 
Figure l. 
bo 
a 
i ee 
SH SOMA HMR 
. Section 6 miles north of Las —_ oe Mex 
. Section through Las Vegas, N. M 
. Section —— eas east slope of te Rocky Mountain uplift near 
. Section across ees Valley at Lamy, N. M 
. Section north of Suwanee, N. Mex . 
. Sketch section through Acoma, N. Mex 
: poenon of sores Mountain, a of Flagstaff, A 
a phe 1, Ss hy. 
Z pat across Grand Canyon, 
XL. Mount Pisgah, betw tween Ludlow and Barstow, Cal ...-..... 
XLI. A, Joshua tree; B, San Gabriel Mission, Cal 
XLIF- San Retnadinn Sousitaitie, Cal 
FIGURES. 
Section of pie > Kansas City, Mo., showing succession of lime- 
stones an 
Section of jocks eau near Eudora and Lawrenc ce, Kans. -...:. 
Section showing succession of rocks in plateau south of Topeka, 
Kans . 
Section across Cottonwood Valley southwest of Elmdale, Kans -... 
Section of rocks i in Sawlog Valley northeast of Dodge, Kans....... 
Section across Timpas Creek valley at Thatcher, Cal. k 
Section through Spanish Peaks west of Tyrone, Colo... ......-...- 
. Section through Trinidad, Colo., showing relations * POCKE sare 
Section across canyon of Mora River southeast of Optimo, N. kc: 
Ojita, N.X 
Section through Madrid, 3 miles south of Los ‘Conillos, N. Mex... 
Section through Sandia Moalicnd near Bernalillo, N. Mex ..-...-. 
Sections showing relations of eypeum bed at Rito and near Rosario, 
N. Mex 
Sketch section showing relations of lava sheets near Mount Taylor, 
N. 
Mex 
i ea from the Zuni —— north across the Santa Fe Rail- 
ear Thoreau, N. Me 
‘ Peg of coal-bearing coke formation, Dakota sandstone, 
and underlying beds in and near the gap 3 miles east of Gallup, 
N. Mex 
Generalized section across Crater Mound, Ariz 
Map of the lava field in the San Francisco —— district, Ariz. 
44 
of Flagstaff, Ariz 
Section through Red Butte, near Grand Canyon, Ariz 
Ideal sections of faulted blocks of Unkar rocks in Grand Canyon, 
Ariz 
: pers of rocks exposed on Bright Angel trail, Grand Canyon, 
Ariz. 
Section of the west slope of the ‘Arison ‘Plateau between Williams 
and Ash Fork, Ariz. - - - 
97579° —Bull. 613—15——13 
