Marriage is that union of the sexes which is most in accordance with the moral and physical necessities of human beings and which harmonizes best with their other relations of life.—RICHARD HARTE. It is of vast importance to bear clearly in mind that all the great social institutions that confront us to-day are of genetic origin and evolution. They have not been devised by man to bring about the true end of all intelligent effort—namely, happiness. They are simply the undesigned, unforeseen results of various natural and social forces of the past. They survive through their tendency to maintain the existence of the race. They subserve life, not happiness. It is not my intention to treat marriage historically and trace back the various forms of it to their social origins. It is sufficient to bear in mind the fact of the natural, undevised origin of every form, including that form of monogamy which prevails in the most civilized countries of to-day. _A priori_, we should have expected that monogamy, being the ideal sex-union of the civilized races of Western Europe, would have been everywhere the last form to appear; that, in short, its fitness to survive all other forms would be shown by lateness of development as well as by superior qualifications for satisfying the needs of a highly developed humanity. This is not so, however. Mr. Herbert Spencer gives reasons for believing that monogamy dates as far back as any other marital relation. “Indeed, certain modes of life necessitating wide dispersion such as are pursued by the lowest forest tribes in Brazil and the interior of Borneo—modes of life which in earlier stages of human evolution must have been commoner than now—hinder other relations of the sexes.” (_Sociology_, vol. i. p. 698.) Two of the lowest tribes of savages existing, the Wood-Veddahs of Ceylon and the Bushmen of South Africa, are customarily monogamous. It is plain, therefore, that if monogamy is to be reckoned the final form of sexual relations, no argument can be based on any theory of its recent date in evolution. The opinion must seek to rest upon different ground—upon the quality of the institution, its fitness and adequateness, not only to human needs in the present system of society, but in the reformed system of the future. While a number of primitive tribes are monogamous, as also are certain monkeys and birds, many civilized peoples have adopted polygamy, sometimes openly, at other times in a masked form. Polyandry is also a form of marriage not uncommon among semi-civilized peoples, as the Nairs of Malabar, the Kandyans of Ceylon and the Tibetans.