XVI 



INDEX TO ILLUSTRATIONS 



United States (continued) : Page 



Rock stream of Imogen Basin, Silverton area 286 



Rocky Mountain elk: An animal which can 

 be profitably raised in almost all parts of 

 the United States 271 



Roosevelt Dam: Type rubble masonry arch 



gravity : , Arizona 336 



Rose-embowered house at Redlands: Califor- 

 nia 662 



Royal Gorge in the Grand Canyon of the 

 Arkansas between Parkdale and Canyon 

 City 362 



Saguaro, or giant cactus, near mouth of 



Salina Canyon, Santa Catalina Mountains 711 



Salt River Valley, south of Phoenix, Arizona, 



showing intensified farming by irrigation 655 



Sand dunes in the Colorado Desert of South- 

 ern California 648 



Scene in the High Sierra, where the water 

 comes from : L,os Angeles Aqueduct, 

 California 593 



Seven feet of solid lignite in the Yellowstone 



River bluff, near Sidney, Montana 938 



Showing open conduit and the cover in place, 



Los Angeles Aqueduct, California 584 



Side view of the head of a house-fly 377 



Silver ship presented to Commander Robert 



E. Peary 537 



Sir Kaan Mercedes Paul, born July 14, 1904: 

 Weight, 1, 800 pounds, and valued at 

 $ 1 ,000 344 



Site for a government reservoir: Upper 



Medicine Lake, Montana 342 



Slid-off face of Landslip Mountain, showing 

 the sharp line of demarcation where 

 the slide began 282 



Sparrow trap 952 



Special gold medal of the National Geo- 

 graphic Society presented to Commander 

 Robert E. Peary 540 



Steam shovel at work digging the conduit 



through the desert: California 570 



United States (continued) : Page 



The aqueduct spans small desert washes by 



rectangular concrete culverts: California. 587 



The huge Triceratops of the Wyoming Basin. 447 



The way they advertise their marvelous cli- 

 mate at Yuma, Arizona 334 



Thirty-foot coal seam at Hanna, Wyoming. . 450 



Torr.atoes grown on the James Warner Ranch, 

 near Spanish Fork, in the Strawberry 

 \'alley, Utah 340 



Two closely related prickly pears growing 



with branches in contact : Tucson, Arizona 710 



Tramway in the Tieton Canyon at Camp No. 



I : Yakima Project, Washington 352 



Transmission line through the roughest part 

 of Arizona to convey power from the 

 great Roosevelt Dam to the Salt River 

 Valley 337 



Tree split by landslide movement near town 



of Rico, Colorado 283 



Turnips and clover respond heavily to phos- 

 phate stimulation : Maine. . 787 



Typical artesian well at Roswell, New Mexico 656 



Undercutting face of bank; the dredge is 

 driven by electricity: Los Angeles Aque- 

 duct, California 591 



U. S. Reclamation Service cement mill, con- 

 tractor's camp, and the Arizona giant 

 cactus: Salt River Project, Arizona 350 



Very remarkable case of one erratic superim- 

 posed on another: Massachusetts 527 



View of an inverted siphon : Los Angeles 



Aqueduct, California 590 



View of the Nonnezoshi ArcTi: Utah 163 



Washington Boulder near Conway, New 



Hampshire 527 



Wheat yield increased 133 per cent by phos- 

 phate : Urbana, Illinois 784 



White Mountain Goat 219 



Yucca radiosa : New Mexico 695 



