Yellowstone National Park, Reconnaissance for a Wagon Road to, 93. Yellowstone National Park, Roads in, 98. Yellowstone National Park, Scorodite in, 100. Yellowstone National Park, Therapeutical Value of Springs of, 108. Yellowstone National Park, Thermal Springs of, 109. Yellowstone National Park, Through the, to Fort Custer, 112. Yellowstone National Park, Through the, on Horseback, 113. Yellowstone National Park, A Trip to, 116. Yellowstone National Park, Unexplained Phenomena of, 118. Yellowstone River, Reconnaissance of, 94. Yellowstone, Valley of the Upper, 119. Yellowstone, A Week in the, 123. Yellowstone, Wonders of the, 129, 130, 131, 132, 133. INDEX. [Appendices A and E being carefully arranged alphabetically, names found in them are not included in this index unless they also occur in the main body of the work. The few abbreviations used are self-explanatory.] Absaroka, Indian name for Crow Tribe, 8. Absaroka Range, name considered, 289. described, 152, 240. first ascent of, 80, 295. first crossed, 104. profile of human face in, 243. Act of Dedication becomes a law, 95. comments upon, 96, 97. history of, 92-5. provisions of, 127. text of, 345. vote on, 95. Act of 1883, Military Assistance in protecting Park, 134, 347. Act of 1890, admitting Wyoming, 347. Act of 1894, National Park Protective Act, 141, 145, 348. Act of 1894, regulating leases, 141, 352. Adirondacks, proposal for reservation in, 97. Administration of the Park, 206-8. Administrative History of the Y. N. P., 127-141. Adverse reports on railroad projects, etc., 141. Africa, preserve for big game in, 97. thermal springs of, 161. Alder Gulch, discovery of gold in, 66. Algonquian family of Indians, 8. territory, 37. Altitudes in the Y. N. P., 154. Alvarez, Spanish trader, 46, 49. American Fur Company, historical sketch of, 34-5, 38. American Fur Company, territory of, 35, 37. Amethyst Mountain, 263. Anderson, Captain G. S., eighth superintendent Y. N. P., 139. plans capture of Howell, 143. quoted, 273, 276. Andesitic lava flows in Y. N. P., 157. "Annie," first boat on Y. Lake, 336. Antelope, habitat of, in Y. N. P., 216. Apollinaris Spring, 217. Appropriations for the Y. N. P., 357. Area of the Y. N. P., 148. Arnold, A. J., member of Helena tourist party, 112, 120. Arsenic Geyser, 220. Artemesia Geyser, 228. Arthur, Chester A., visits Y. N. P., 107, 371. Assistant Superintendents, Y. N. P., 135. Astor, John Jacob, and the American fur trade, 34. Astorians, The, 21, 23. departure of, for Pacific coast, 31 surrender to N. W. Fur Co., 33. Astringent Creek, 143. Atlantic Creek, 246. Atmosphere of the Y. N. P., 199, 210. Australia, thermal springs of, 161. Autumn foliage in the Y. N. P., 192.