A History of Matrimonial Institutions (Vol. 1-3). George Elliott Howard
und Leben des socialen Körpers (Tübingen, 1881); Espinas, Des sociétés animales (2d ed., 1878); Groos, Die Spiele der Thiere (Jena, 1896), or the English translation (New York, 1898); and Wagner, "Die Kulturzüchtung des Menschen gegenüber der Naturzüchtung im Tierreich," in Kosmos, 1886, I. In this connection read also Houzeau, Études sur les facultés mentales des animaux (Mons, 1872); Vignoli, Ueber das Fundamentalgesetz des Intelligenz im Tierreiche (Leipzig, 1879); and Salt, Animals' Rights (New York, 1894).
On the problems of sex and kinship mentioned in the text see Geddes and Thompson, Evolution of Sex (New York, n. d.); Ellis, Man and Woman (London, 1896); Finck, Primitive Love (New York, 1899), vigorously attacking some of Westermarck's theories; his Romantic Love and Personal Beauty (London, 1887); Duboc, Psychologie der Liebe (Hannover, 1874); Mantegazza, Physiologie der Liebe (30th ed., Berlin, 1897); Klebs, Verhältniss des männ. und weibl. Geschlechts in der Natur (Jena, 1894); Schroeder, Das Recht in der geschlechtl. Ordnung (Berlin, 1893); Thomas, "Relations of Sex to Primitive Social Control," and his "Difference in the Metabolism of the Sexes," both in Am. Journal of Sociology, III (1898); Sadler, The Law of Population (London, 1830); Starkweather, The Law of Sex (London, 1883); Hofacker and Notter, Uber die Eigenschaften ... welche sich auf die Nachkommen vererben (Tübingen, 1827); Ploss, Das Weib (Leipzig, 1895); also his Ueber die das Geschlechtsverhältniss der Kinder bedingenden Ursachen (Berlin, 1859); Schenk, Einfluss auf das Geschlechtsverhältniss (3d ed., Magdeburg and Vienna, 1898); the brilliant monograph of Düsing, Die Regulierung des Geschlechtsverhältnisses (Jena, 1884); Huth, Marriage of Near Kin (2d ed., 1887); Lewkowitsch, "Die Ehen zwischen Geschwisterkindern and ihre Folgen," in ZFE., VIII; and Mitchell, "Blood-Relationship in Marriage," in Mem. of London Anth. Society, 1865, II, 402 ff.
Several important points are treated in Tylor's Early History of Mankind (New York, 1878); and in his Method of Investigating Institutions. See also Kovalevsky, Tableau des origines et de l'évolution de la famille (Stockholm, 1890); Swinderen, De Polygynia (Groningae, 1795); and for a curiosity, read Premontval, La monogamie (1751). In general, the literature cited in Bibliographical Note II has been used, and so need not here be described.]
I. THE PROBLEM OF PROMISCUITY
The researches of several recent writers, notably those of Starcke and Westermarck, confirming in part and further developing the earlier conclusions of Darwin and Spencer, have established a probability that marriage or pairing between one man and one woman, though the union be often transitory and the rule frequently violated, is the typical form of sexual union from the infancy of the human race. The problem is not yet fully worked out; but if in the end the theory of original promiscuity must be abandoned, and the pairing or monogamous family accepted as the primitive social unit, it is not because of the spiritual and moral superiority of man, as compared with other animals, but because sexual communism as a primitive and general phase of life appears to be inconsistent with the biological, economic, and psychological laws which have determined the general course of organic evolution. Strongly supported and highly probable as is the pairing or monogamic theory, it must be clearly understood in the outset that it is still only a theory and has not yet reached the stage of demonstration. It will hardly do, however, to set aside the researches of its adherents as being superficial and devoid of real scientific method; for the champions of the opposite doctrine of primitive communism are nothing if not daring, and their sweeping generalizations often rest solely on comparatively few "survivals" of alleged conditions which are absolutely "prehistoric."[266]
It may be impossible to prove that there ever was a uniform primitive state. "So long as we are within the sphere of experience," says Starcke, "we cannot begin by assuming that there was at any time only a single human community. Experience begins with a plurality of communities, and the single community of which we are in search must be found on the indeterminate boundary between man and animals."[267] Indeed, it seems certain that if we are ever to understand the character of the earliest forms of human marriage and the human family, we must begin by studying the family and marriage as they exist among other and less advanced members of the animal world.[268] Biology, declares Letourneau, is the starting-point of sociology.[269] In this view Starcke coincides. "We have no reason to regard the social life of man as a recent form. Not only do the same psychical forces which influence gregarious man also influence the gregarious animal; probability also leads us to infer that the primitive communities of mankind are derived from those of animals. Since man in so many respects only goes on to develop the previous achievements of animal experience, it may be supposed that he made use of the social experience of animals as the firm foundation of his higher advancement." Besides, "there are human communities which are far less firmly established than those of animals;" and "it may even be asserted that the social faculty is positive in animals and negative in man," for man is "less subservient to instinct."[270] "If we want to find out the origin of marriage," says Westermarck, "we have to strike into another path, the only one which can lead to the truth, but a path which is open to him alone who regards organic nature as one continued chain, the last and most perfect link of which is man. For we can no more stop within the limits of our own species, when trying to find the root of our psychical and social life, than we can understand the physical condition of the human race without taking into consideration that of the lower animals."[271]
Accordingly three principal arguments against the existence at any time of a general state of promiscuity have been advanced:
First is the so-called zoölogical argument, based on a comparison of the sexual habits and institutions of animals with those of the lowest races of men. In the outset it is important to observe that the physical differentiation of the sexes is itself a product of the struggle for existence. This important fact is made the starting-point of the argument by which Hellwald[272] finds the elements of the human mother-group and of mother-right in earlier animal experiences. Among the lowest members of the animal kingdom there is no individual distinction of sex. That first makes its appearance when the "artistically constructed organism, in order to sustain itself in the process of evolution, is called upon to perform a wider series of functions." Thus "when an animal is forced to greater exertion, when it must work in order to exist, when unresistingly it can no longer suffer the stream of events to press upon it, but withstands it and seeks in it to follow its own course, then the separation of the sexes appears, and, indeed, as a division of labor created by nature for the purpose of developing species." With further evolution, male and female characteristics become more pronounced, in response to the special functions which each sex is called upon to perform. The same process continues in the case of man. To see in him anything other than the "highest and foremost representative of the animal world, one must be drunk with metaphysical nectar, and nothing is better fitted than comparative physiology to humble one's pride in this regard." For man's entire physical organization is "homologous to that of the higher species of animals." Accordingly, the lower a group of men stands on the ladder of culture, the less marked is the "bodily differentiation of the sexes." Among various backward peoples there is relatively slight difference in outward appearance between the men and the women.[273] The growth of sexual variation in physical structure keeps pace exactly with progress in civilization. This progress depends mainly on two original forces. Of these "without doubt the mightiest is hunger," the need of nourishment. For everywhere on earth the "first thought and striving" of living beings is the "stilling of hunger." Next to the struggle for food, the sexual and pairing impulse is the most potent factor in the genesis of society. The former influence, it is important to observe, is the more constant and the more imperative. The latter grows and becomes more acute with increase in refinement and the consequent development of the nervous system.[274] It follows that in the origin of social institutions the erotic or pairing impulse, however important, is a less cogent genetic force than the economic necessity of a food supply.
The lives of the lower animals reveal a great variety of sexual relations. The lowest form, and perhaps the most frequent, is that of unlimited promiscuity.[275] Among the invertebrates the preservation of the young is left almost wholly to chance. The duties of the parents are limited mainly to the functions of reproduction. "In the lowest classes of vertebrata, parental care is likewise almost unheard of."