W.H.R.Rivers, Kinship and social organisation
“ The terms for other relatives recorded by Morgan show some evidence of the widely generalised use of the Tewa, but such a use cannot account for the classing of the wife of the mother’s brother with the wife which occurs among the Pawnees. Nevertheless, the Tewa practice should keep us alive to the possibility that the Sioux nomenclature may depend on some social condition different from that which has been effective in the Banks Islands in spite of the close resemblance between the two. ”
