It is the primary purpose of this book to trace the development of the family and marriage in the "three homes" of the English race. An attempt is made to describe the mechanism provided by the state for the administration of matrimonial law; and to appreciate the importance of some of the many problems centering in the family as a social institution. Necessarily a theme so broad may here be treated only in outline. Yet in the outset it is the limitations of the subject which require to be most carefully noted. It is but a part of the wide field of family history which receives special attention. We are closely concerned with the forms of celebration and divorce as they existed among our Teutonic ancestors, and as they have since been molded by custom and legislation in England and the United States. Only in a secondary degree are we interested in the intricate law of the domestic relations. Except incidentally, we are not now called upon to consider the property rights of husband and wife, the laws of guardian and ward, or the rules of kinship and succession. More pertinent is the general question of the genesis of human marriage and the human family.[1] It will be impossible, of course, to examine independently the many difficult problems which have arisen in this connection. Even the specialist may find it hard to trace a clear way through the bewildering maze of existing theory and sub-theory. It seems desirable, therefore, by way of introduction, to present as clearly and briefly as may be the more salient results of recent investigation. Marriage is a product of social experience. Hence to understand its modern aspects it is needful to appeal to the general sociological facts surrounding its origin and its early history among the races of mankind. It is necessary to get our bearings. At the dawn of history the Teutonic family was essentially monogamic, originating in a contractual relation. What, then, do we know as to the origin of the monogamic family and regarding the conditions under which marriage by contract arose? Part I will concern itself with the solution of this question. [1] "The expression 'human marriage' will probably be regarded by most people as an improper tautology. But, as we shall see, marriage, in the natural-history sense of the term, does not belong exclusively to our own species. No more fundamental difference between man and other animals should be implied in sociological than in biological and psychological terminology. Arbitrary classifications do science much injury."--WESTERMARCK, _History of Human Marriage_, 6. In like spirit, HELLWALD entitles his book _Die menschliche Familie_.