BONNEVILLE'S ITINERARY.—Washington Irving's "Adventures of Captain Bonneville" is one of the most pleasing romances extant. The captain left St. Louis. Missouri. in May, 1832, with a party of 110 men, traveled up the Platte River, crossed thru South Pass (q.v.) to Green River, Wyoming. His party entered Idaho by the way of Teton Pass (q.v.) on September 3. 1832, passed thru Teton Basin, then called Pierre's Hole (q.v.), thence down Pierre River, across Snake River (q.v.), and from thence by Mud Lake and Birch Creek, then called John Day's Defile (q.v.), to the headwaters of Lemhi River (q.v.), which he reached September 19. He passed down the Lemhi River until he came to the Lewis and Clark trail (q.v.), which he followed, going down the Salmon River (q.v.) until he came, on September 26th, to Salmon Creek (q.v.), now called Carmen Creek, at the place where the trail crosses, which was near the mouth of the creek. Here he erected a temporary fortification, built some horse corrals and log cabins, slight evidences of which are still to be seen. At this place, called Bonneville's Fort on the Salmon River, he was in the full enjoyment of his wishes, leading a hunter's life in the heart of the wilderness. He left this fort November 20th, passed along Lemhi River and Timber Creek, a fork of the Lemhi, until he came to the deep gorge, at present a reclamation dam site, on Timber Creek, thru which he passed December 19th, and held his Christmas festivities in Swan Basin on said creek. He then proceeded down Birch Creek to its "sinks," which is in the vicinity of the "sinks" of Big Lost River (q.v.), then called Goddin River (q.v.). He followed Goddin River to the vicinity of Pioneer (q.v.). and from thence to the Big Butte (q.v.), where he struck the trail going to the Snake River (q.v.), arriving on that stream just south of Blackfoot (q.v.). which place he reached on January 12, 1833. On March 13th he arrived at his fort on Salmon River, having returned over the route he had traveled in going. From his fort he proceeded up or south along Salmon River, thence up the Pahsimaroi (q.v.). thru Double Spring Pass to Thousand Spring Valley on Big Lost or Goddin River, where he trapped for muskrats. Thence he passed down this stream, skirted the mountains, and on April 26th was on Little Wood River. After trapping awhile he returned to the caches he had made at the fort on Salmon River, arriving there June 15th, and from thence back to Snake River and to Horse Creek, Wyoming. After trapping in the Bighorn Mountains he returned to Idaho at Bear River on November 1st, and thence to Soda Springs (q.v.), after which he went into winter quarters at Batise Springs on the Portneuf River (q.v.) in November, 1833. He left this camp on Christmas Day, going down the south bank of the Snake River and passing American Falls (q.v.), Cassia Creek (q.v.), Fishing Falls (q.v.) and Bruneau River (q. v.), thru the Blue Mountains, arriving at Fort Walla Walla, March 4, 1834, returning to the Portneuf, over the same route, by May 21st, thence to Bear River, which place he left July 3d with a considerable party, going to the Columbia River (q.v.), reaching his destination in September, but retraced his steps at once, and in October was back on the Portneuf, thence to Bear River (q.v.), reaching his destination in September, but he retraced his by the way of Green River, he finally returned to the United States army, from whence he had come.—IRVING, Adventures of Captain Bonneville.