Note 444 — Chapter III · THEORY OF THE ORIGINAL PAIRING OR MONOGAMOUS FAMILY

On these modifications see Spencer, Principles of Sociology, I, 694-96; Wake, Marriage and Kinship, 196, 197, 186 ff., 210. "The phases of this custom [wives of different grades] may be practically divided into (a) those in which all a man's wives have equal rights, (b) and those where there is a superior wife (or wives) and inferior ones, the latter being sometimes legal wives, and at others slave wives or concubines."—Wake, 197. "The Siamese occupy the almost unique position of having four classes of wives, of which, however, the slave wife answers to the concubines of other forms of polygyny."—Ibid., 197. Cf. further, Grosse, Die Formen der Familie, 109; Waitz, Anthropologie, III, 328; Hellwald, Die mensch. Familie, 368, 382 (China), 414; Avery, "The Indo-Pacific Oceans," Am. Antiquarian, VI, 366.