“ Murder and manslaughter are concededly offenses against the person, and much more serious than is adultery. Was it intended that a prosecution should lie for adultery, but not for murder or manslaughter? Rape also is concededly an offense against the person, and is generally regarded as among the most heinous, so much so that death is often prescribed as the punishment. Was it intended that a prosecution should lie for adultery, where the woman's participation is voluntary, but not for rape, where she is subjected to the same act forcibly and against her will? ”

“ There is none dealing with bigamy, polygamy, incest, adultery, or fornication, which in terms refers to Indians, these matters always having been left to the tribal customs and laws, and to such preventive and corrective measures as reasonably could be taken by the administrative officers. ”

“ And are they not intended to be in accord with the policy reflected by the legislation of Congress and its administration for many years, that the relations of the Indians among themselves-the conduct of one toward another-is to be controlled by the customs and laws of the tribe, save when Congress expressly or clearly directs otherwise? ”