INDEX 



Part 1.— EEPORTS OF PEOF. F. V. HAYDEN, UNITED STATES GEOLOGIST, 



AND A. C. PEALE, M. D. 



Page. 



Act of Congress in regard to the Yellowstone Park 164 



Alder Gulch 39,41 



Alum Creek 87 



American Falls 30 



Analyses of gevserite 187 



hot springs 167,176,179,180,181,187,188,189 



hot spring deposit 130, 179 



Soda Springs, Colorado 159 



phonolytes 170 



salt from Idaho 161 



water from the geysers 187 



Bannock City 143 



Basalt, erosion of, by Snake River 28 



of Port Neuf Valley 23 



Butte 28,53 



Tables 29 



Basaltic bowlder 57 



Bath Spring 114 



Tub 119 



Bear Gulch 63 



Lake 156 



Lake Valley 157 



Eiver 21 



Eiver Bay 19 



Eiver Valley 22,150 



resources of 22 



Beaver Head Creek 36 



Eock 143 



Eiver 143 



Valley 145 



Bee Hive, (geyser-cone) 110 



Bennington 155 



Big Hole Eiver 143 



Big Horn Eauge 54 



Blackfoot Fork 27,30,151 



Black-tail Deer Creek 33,35 



Eange 145 



Valley 35 



Bloomington 157 



Bottler's Eanch 54,57 



Bowlder Creek, Big 51,54 



North 141 



Box Elder Canon 17 



Park 18 



Bozeman City 44 



Pass 46 



Bridgeport 21 



Bridger Pass 45 



Bridger's Peak 46 



Brigham City 17 



Brimstone Basin 135, 189 



Butte, basalt 28,53 



Kettletop 29 



Buttes, Twin 112 



