A few camps might remain to winter in the Green River country, but most of them continued their hunt in other parts while returning to winter quarters. Some camps retraced their outward route, but others traveled northward through Star Valley in western Wyoming and thence up the Snake River to Jackson Hole. It must be kept in mind that there was no central camp group nor were there fixed hunting trails that each group had to follow and that were recognized as their rightful grounds. Camp groups could travel where they pleased and when they pleased. Proprietary rights to hunting grounds were not recognized. The individual camp groups changed in composition and membership annually. A small camp of only a few tipis might consist of consanguineally and affinally related people, but such association was not a fixed rule. Also, a family could leave one hunting group and join another at will. The hunting season ended with the advent of winter. Camp groups drifted into the previously described winter quarters and awaited spring, when the cycle would begin again. LEMHI SHOSHONE One of the most cohesive of all Shoshone groups lived in the valley of the Lemhi River on the western slope of the Continental Divide. The Lemhi Shoshone were commonly known by the term Agaidika, or "salmon eaters." Like the people of the Fort Hall plains they had fairly large herds of horses, which enabled them to take part in the transmontane buffalo hunt. Excellent data on the early historic period in Lemhi Valley is found in the journals of Lewis and Clark, who crossed the Continental Divide to the Lemhi River on August 13, 1805. A certain amount of information on the Shoshone penetration of Montana can be derived from this source. Sacajawea, the young Shoshone woman who acted as guide and interpreter for Lewis and Clark, said that she had been kidnaped during an attack upon the Shoshone at a camp at the Three Forks of the Missouri River (Lewis and Clark, 1804-06, 2:283). On their return journey from the Pacific the explorers passed through Big Hole Valley, slightly above the present town of Wisdom, Montana, where it was noted that they were "in the great plain where Shoshonees gather Quawmash and cows etc." (ibid., 5:250-251). The party proceeded westward up the Beaverhead River, where Sacajawea claimed the Shoshone were sometimes found (p. 321) and above Dillon saw one mounted Indian thought to be Shoshone (p. 329). No other Indians were sighted, although there were indications on the upper Beaverhead River that Indians had been digging roots (pp. 332, 334). Apparently the buffalo had been receding to the east even at that early time, for Sacajawea said that they used to come to the very head of the Beaverhead River; apparently they had been hunted out by the Shoshone, who tried to avoid the trip to the plains by killing as many buffalo as possible in the mountains (p. 261). It seems evident that the Indians' acquisition