xii ILLUSTRATIONS 



FACING PAGE 



Irrigation ditch in the city of Phoenix, Arizona 175 



Mitchell Dam on the Coosa River, Alabama 188 



Harnessing a mountain stream 189 



Power dam on the Spokane River, Washington 196 



Grandeur of the high Sierra 197 



Prosperous Indian farmer at his Washington home ... 212 



Primitive Indians in Havasupai Indian Reservation, Ari- 

 zona 213 



Indian School at Yakima, Washington 222 



Southern Navaho school boys 222 



Blackfoot Reservation women are up to date 223 



National Park scenery 234 



Trick Falls in Glacier National Park 235 



Nature guide class in Yosemite National Park 260 



Huggins Hell, Great Smoky National Park 261 



Loch Vale and Taylor Glacier, Rocky Mountain National 



Park 278 



Characteristic National Park motor camp 279 



Mount Olympus, Washington 288 



Ruins of prehistoric Pueblo Bonito, Chaco Canyon Na- 

 tional Monument 289 



The first apartment house 294 



Casa Grande National Monument, Arizona 295 



Antelope, swiftest of wild animals 310 



The end of a wilderness elk . . * 311 



Mountain-goat in full winter coat, Montana 320 



Young bull moose, Yellowstone 321 



Summer motor campers in New Hampshire 336 



Boy Scouts' camp in National Forest, Colorado .... 337 



