Free-soil party formed, 290. Fremont, J. C., meets Senator Benton, 234; sent to explore South Pass, 234; ascends Fremont's Peak, 236; what he accomplished or recommended, 236; corrects the popular error about the Great Desert, 236; sent to the Lower Columbia, 237; finds a new pass through the Rockies, 238; explores Great Salt Lake, 238; in California, 256; is there again as war is impending, 258; ordered out of the country, 259; heads the American settlers in a revolt against the Mexican Government, 260. Fremont's Peak ascended, 236. French Spoliation Fund, its origin, 174. Frontenac (Louis de Buade) Comte de, made governor of Canada, 83; his character, 84; builds a post on Lake Ontario, 97. Garrison, William Lloyd, leads anti-slavery men, 247. Gilpin, William, predicts mineral wealth of Rocky Mountains, 308. Golden Gate named, 279 (_note_). Gray, Robert, first sails into the Columbia River, 161, 162 (_note_). Great American Desert described by Long, 223; its bearing on the Oregon question, 231; Fremont corrects the popular error, 236; its present condition, 325, 329. Great Salt Lake first mentioned, 35. Great Salt Lake explored by Fremont, 238, 241 (_note_). Gregory Diggings, Col., 312. Gregory, John H., finds gold on Clear Creek, Col., 312. Gulf of California, missions on, 38. Gulf of Mexico, early knowledge of, 10, 17 (_note_); coasts described, 114. Hearne, Samuel, goes to Coppermine River, 137. Hennepin, Fr. Louis, 99; sent by La Salle to explore the Lower Illinois, 101; described, 105, 106; ascends the Upper Mississippi, 105; taken by Sioux, 106; names Falls of St. Anthony, 107; released by French traders, 108; his account of his explorations, 109 (_note_). Hot Springs of the Washita, 222. Houston, Samuel, made president of Texas, 243. Hudson, Henry, 132, 135 (_note_). Hudson's Bay explored, 132, 133. Hudson's Bay Company formed, 134; its early struggles, 134; intent of the grant, 136. Humboldt Mountains and River named, 258. Hurons, 71, 72; driven from Lake Huron, 76, 79 (_note_). Iberville, Le Moyne de, 118, 123 (_note_); arrives at Pensacola, 119, and Mobile Bay, 119; in the Mississippi River, 120; gets a letter from La Salle, 120; forms settlements in Biloxi Bay and Mobile, 121; death, 123. Idaho, 323, 325 (_note_). Illinois nation, Joliet and Marquette among, 88.