Includes Population Changes Among The Northern Plains Indians, By Clark Wissler; Regional Diversity In The Elaboration Of Sorcery In Polynesia, By Peter H. Buck; Cultural Relations Of The Gila River And Lower Colorado Tribes, By Leslie Spier; Hopi Hunting And Hunting Ritual, By Ernest Beaglehole; Navaho Warfare, By W. W. Hill; The Economy Of A Modern Teton Dakota Community, By H. Scudder Mekeel; And The Distribution Of The Northern Athapaskan Indians, By Cornelius Osgood.