Baird, S. F., presents Lieutenant Doane's report to Phil. Soc. of Washington, 83. Bannock Indians, 8, 10. incursion of, into Y. N. P., 126, 215. territory of, 10. Bannock Peak, 217. Bannock Trail, 17, 24, 43. Baring-Gould's theory of geyser action, 166. Barlow, Captain J. W., expedition of, 85-6, 291. quoted, 6, 231, 344. report of, 86. Baronett, C. J., biographical sketch, 292. Baronett's Bridge burned, 124. history of, 261. Basaltic lava flows in Y. N. P., 157. Bath Lake, 214. Battle of trappers and Indians near Y. Lake, 49. Battle of the Big Hole, 116. Bays of the Y. Lake, 335. Bears and tourists, 184. Bear Creek, 70. Beaver Lake, 219. Bechler River, 151. Bee Hive Geyser, 234. Belknap, W. W., visits Y. N. P., 105. Beryl Spring, 221. Bibliography of the Y. N. P., 361. Biddle Lake, first name for Jackson Lake, 331. Big Game Ridge, 153. Big Hole, Battle of the, 116. Bighorn River, Lisa's fort on, 29, 31. source of, 188. Big Thunder, Nez Percé chief, 113. Birds in the Y. N. P., 185. Biscuit Basin, 228. Blackfeet Indians, 8, 9. territory of, 8, 9, 18. treaties with, 18, 19. Black Growler, 175, 220. Black Sand Basin, 230. Blaine, J. G., introduces Langford at Washington lecture, 84. signs Act of Dedication, 346. Block house, ancient, in Y. N. P., 41. Boat, first on Y. Lake, 337. Boat ride on Y. Lake, 243. Boiling River, 212. Boiling Springs in Y. N. P., 174. Bonneville, Captain, 37. refers to Firehole River, 49, 316. Bottler's Ranch, 120. Boundaries of the Y. N. P., 148, 278-280, 333. Boutelle, Captain F. A., Seventh Superintendent of the Park, 139. Bradbury, John, 3, 21. Bradbury, John, interviews Colter, 28. Bradley, F. H., quoted, 321, 331, 332, 333. Bridge, Baronett. See _Baronett's Bridge_. Bridge Creek, 244. Bridge, Natural, 244. Bridge over the Y. River, 203. Bridger, James, ability of as guide, 328. biographical sketch, 327. acquaintance of with Park country, 51, 52, 61. disbelieved by the public, 53, 57. guide to Captain Raynolds, 59. his stories, 54-56. partner in Rocky Mountain Fur Company, 36. and Two-Ocean Pass, 61, 245. British Fur Companies, strife between, 34. British Fur Traders excluded from U. S. Territory, 34. Bronze Geyser, 240. Buffalo of Y. N. P., 143, 184. Buildings at Mammoth Hot Springs, 209, 216. Buildings in Y. N. P. in 1880, 132. Bunsen Peak, 215. Bunsen's theory of geyser action, 163-5. Burgess, Felix, government scout, 110. arrests Howell, 143, 144. "Burning Mountains," 13, 16.