Groups of Bannock were variously reported in Wyoming, Montana, and Idaho during these years, and it is to be assumed that they sought both buffalo and rations. Governor Campbell of Wyoming wrote in October, 1870, that the Bannock had spent the summer with the Crow Indians (J. A. Campbell, 1871, p. 639) after leaving Wind River. The Bannock were evidently the most difficult to settle of all the Idaho Indians, and their nomadic propensities were restrained only after the conclusion of the Bannock War of 1878. The data that follow were gathered through ethnographic means and continue and summarize the foregoing historical account. The Bannock population of the Fort Hall plains was undoubtedly resident in that area for a considerable period. Living on the western slope of the Continental Divide, they crossed the mountains frequently to hunt in the buffalo country of the Missouri drainage. In the process they came into contact with tribes of the Plains and borrowed a good deal of culture from them. However, contact with the Paiute of Oregon continued. During the Bannock War of 1878 the Fort Hall insurgents were joined by the rebellious inmates of the Malheur Agency in eastern Oregon. Also, genealogies given by informants indicate that many Northern Paiute were still leaving their Oregon habitat as late as the time of the treaty and thereafter and were joining the Bannock in their more abundant and exciting life of warfare and buffalo hunting. In effect, these migrants became "Bannock" when they began to live with the Bannock. The formation of the Bannock in southeastern Idaho from Oregon Paiute who managed to get horses and were attracted by the buffalo hunt was not a single occurrence at some indefinite time in the past; it was a continuing process that lasted into the reservation period. There is no evidence placing the Bannock in the Fort Hall area before the introduction of the horse. It is doubtful that they predated this time, given the fact that buffalo hunting on horse was one of the main attractions of eastern Idaho. The relation of the Bannock to neighboring Shoshone groups, denominated by the generic term, "Wihinait," is somewhat problematic and can best be understood from detailed consideration of the two populations. Steward says that "the Fort Hall Bannock and Shoshoni were probably comparatively well amalgamated into a band by 1840" (Steward, 1938, p. 202), but also notes (p. 10) that "Bannock and Shoshoni, though closely cooperating and living on terms of equality, were politically distinct in that each had its band chief." Our evidence indicates that there was a good deal of social intercourse and intermarriage and cooperation in the buffalo hunt between the two groups, but except when engaged in some joint endeavor each appears to have maintained its autonomy. Although there were organized bands, their lines were not very clear-cut because of their frequent fission (ibid., p. 202):