ILLUSTRATIONS
The Chief Geographer of the United States, surveying theSierras, with Assistant Topographer _Frontispiece_
FACING PAGEIn the Home of the Kodiak Bear 8A Lofty Spouter }Water Enough for All } 30In the Tamarack Swamp 44A Tangle of Swamp 54Measuring Stream Flow 72Difficulties of Work 76Dense Southern Palm Grove 82Grand Canyon of the Colorado 94An Awkward Country to Work In 98"How in the World am I going to get up there?" 108A Hard Point to Measure 118Twenty-seven Miles from Water 152In the Death Valley 170Crossing a Swollen Stream 176Bridged by "Double Tree" 180If He Should Slip! 186A Grim and Icy Barrier 252A General View of Tyonok 256Farewell to Civilization 260Where an Eternal Gale Rages 270Morning after the Blizzard 278Resting after a Long Pull 288A Short but Dangerous Rapid 300Skinning a Caribou 306The End of a Hard Climb 310The Only Bit of Rock for Miles 314In Icy Water under a Burning Sun 348Thus Far with the Boats, and no Farther! 354Winter's Threat Almost Fulfilled 370Eskimo Saviors }Pointing away from Winter } 376
THE BOY WITH THE U. S. SURVEY