Over Mount Washburn to Falls of the Yellowstone--Ascent of Mount Washburn--Extensive View--Steam Puffs--Elephant's Back--Grand Cañon--Yellowstone Basin--The Three Tetons--First View of Yellowstone Lake--Madison Mountains--Gallatin Range--Emigrant Peak--Geological History of the Yellowstone Basin--Ancient Volcanic Action--Descent of Mount Washburn--Hell-broth Springs--The Devil's Caldron--Cascade Creek--The Devil's Den--Crystal Cascade 61 CHAPTER VIII. The Grand Cañon and the Falls of the Yellowstone--Description of Grand Cañon--Descent into the Cañon--History of Grand Cañon---Lower Falls--Upper Falls 78 CHAPTER IX. From the Falls to the Lake--River above the Falls--Alum Creek--Boiling Springs--Crater Hill--A Narrow Escape--The Locomotive Jet--Sulphur Springs--Mud Puffs--No Vegetation--Temperature of Springs--Muddy Geyser--Mud Volcano--Mud-sulphur Springs--The Grotto--The Giant's Caldron--Movements of Muddy Geyser 90 CHAPTER X. Yellowstone Lake--Setting of the Lake--Shape of the Lake--Shores of the Lake--Yellowstone Trout--Worms in Trout--Waterfowl--The Guide-bird--Fauna of Yellowstone Basin--Islands in the Lake--The First Explorers 105 CHAPTER XI. Around the Yellowstone Lake--Hot Springs of Pelican Creek--Hot Springs of Steam Point--Fire Slashes--Difficult Travelling--Little Invulnerable--Poetry in the Wilderness--Volcanic Peaks--Mounts Langford, Doane, and Stephenson--Brimstone Basin--Alum Creek--Upper Yellowstone--Wind River Mountains--Valley of Upper Yellowstone--The Five Forks--Bridger's Lake--Yellowstone Mountains--Heart Lake--Madison Lake--Mount Sheridan--Flat Mountain--Bridger's "Two Ocean River"--A Companion lost--Lakes and Springs--Hot Springs on the West Shore--Bridge Creek--Dead Springs--The Elephant's Back 114 CHAPTER XII. Upper Geyser Basin--The Grand Geyser Region--Firehole River--Madison Lake--Mountains about the Lake--Cascades--The Geysers--Old Faithful--The Bee-hive--The Giantess--Castle Geyser--Grand Geyser--The Saw-mill--The Comet--The Grotto--The Pyramid--The Punch Bowl--Black Sand Geyser--Riverside Geyser--The Fan--The Sentinels--Iron Spring Creek--Soda Geyser 133 CHAPTER XIII. Lower Geyser Basin--Down the Firehole--Prismatic Hot Springs--The Cauldron--Old Spring Basins--The Conch Spring--Horn Geyser--Bath Spring--The Cavern--Mud Springs--Thud Geyser--Fountain Geyser--Mud Pot--Fissure Spring--White Dome Geyser--Bee-hive--Petrifaction--Hot Spring Vegetation--Cold Spring--General View of the Basin--The Twin Buttes--Fall of the Fairies--Rainbow Spring 162 CHAPTER XIV.