(3) The decisive cause, however, of the breakdown of the maternal system was the development of the pastoral stage of industry. Now, the grazing of flocks and herds requires considerable territory and necessitates small and compact groups widely separated from one another. Hence, in the pastoral stage the wife must go with the husband and be far removed from the influence and authority of her own kindred. This gave the husband greater power over his wife. Moreover, the care of flocks and herds accentuated the value of the male laborer, while primitively woman had been the chief laborer. In the pastoral stage the man had the main burden of caring for the flocks and herds. Under such circumstances nothing was more natural than that the authority of the owner of the family property should gradually become supreme in all matters, and we find, therefore, among all pastoral peoples that the family is itself a little political unit, the children taking the father's name, property and authority passing down along the male line, while the eldest living male is usually the ruler of the whole group.
(4) After all these causes came another factor—ancestor worship. While ancestor worship exists to some extent among maternal peoples, it is usually not well-developed for some reason or other until the paternal stage is reached. Ancestor worship, being the worship of the departed ancestors as heroes, seems to develop more readily where the line of ancestors are males. It may be suggested that the male ancestor is apt to be a more heroic figure than the female ancestor. At any rate, when ancestor worship became fully developed it powerfully tended to reenforce the authority of the patriarch, because he was, as the eldest living ancestor, the representative of the gods upon earth, therefore his power became almost divine. Religion thus finally came in to place the patriarchal family upon a very firm basis.
Thus we see how each of these two great forms, the maternal family and the paternal family, arose out of natural conditions, and therefore they may be said to represent two great stages in the social evolution of man. It is hardly necessary to point out that civilized societies are now apparently entering upon a third stage, in which there will be relative equality given to the male and the female elements that go to make up the family.
Polyandry.—We must notice now the various forms of marriage by which the family has been constituted among different peoples and in different ages. Marriage, like the family itself, is variable, and an indefinite number of forms may be found among various peoples. We shall notice, however, only the three leading forms,—polyandry, polygyny, and monogamy,—and attempt to show the natural conditions which favor each. It is evident that if we assume that the primitive form of the family was that of a simple pairing monogamy, the burden is laid upon us to show how such different types as polyandry and polygyny arose.
Polyandry, or the union of one woman with several men, is a relatively rare form of marriage and the family, found only in certain isolated regions of the world. It is particularly found in Tibet, a barren and inhospitable plateau north of India and forming a part of the Chinese Empire. It is also found in certain other isolated mountainous regions in India, and down to recent times also in Arabia. In none of these places does it exist exclusively, but rather alongside of monogamy and perhaps other forms of the family. Thus in Tibet the upper classes practice polygyny and monogamy, while among the lower classes we find polyandry and monogamy. In all these regions where polyandry occurs, moreover, it is to be noted that the conditions of life are harsh and severe. Tibet is an exceptionally inhospitable region, with a climate of arctic rigor, the people living mainly by grazing. Under such circumstances it is conceivably difficult for one man to support and protect a family. At any rate, the form of polyandry which we find in Tibet suggests that such economic conditions may have been the main cause of its existence. Ordinarily in Tibet a polyandrous family is formed by an older brother taking a wife, and then admitting his younger brothers into partnership with him. The older brother is frequently absent from home, looking after the flocks, and in his absence one of the younger brothers assumes the headship of the family. Under such circumstances we can see how the natural human instincts which would oppose polyandry under ordinary circumstances, namely, the jealousy of the male, might become greatly modified, or cease to act altogether. Certain other conditions besides economic ones might also favor the existence of polyandry, such as the scarcity of women. Summing up, we can say, then, that this rare form of the family seems to have as its causes: (1) In barren and inhospitable countries the labor of one man is sometimes found not sufficient to support a family. (2) Also there probably exists in such regions an excess of males. This might be due to one of two causes: First, the practice of exposing female infants might lead to a scarcity of women; secondly, in such regions it is found that from causes not well understood a larger number of males are born. It may be noted as a general fact that when the conditions of life are hard in human society, owing to famine, war, or barrenness of the soil, a larger number of male births take place. We may therefore infer that this would disturb the numerical proportion of the sexes in such regions. (3) A third cause may be suggested as having something to do with the matter, namely, that habits of close inbreeding, or intermarriage, might perhaps tend to overcome the natural repugnance to such a relation. Moreover, close inbreeding also, as the experiments of stock-breeders show, would tend to produce a surplus of male births, and so would act finally in the same way as the second cause.
POLYGYNY, [Footnote: The word "polygamy" is too broad in its meaning to use as a scientific term for this form of the family. "Polygamy" comes from two Greek words meaning "much married;" hence it includes "polyandry" (having several husbands) and "polygyny" (having several wives).] or the union of one man with several women, is a much more common form of marriage. It is, in fact, to be found sporadically among all peoples and in all ages. It has perhaps existed at least sporadically from the most primitive times, because we find that at least one of the anthropoid apes, namely, the gorilla, practices it to some extent. It is manifest, however, that it could not have existed to any extent among primitive men, except where food supply was exceptionally abundant. In the main, polygyny is a later development, then, which comes in when some degree of wealth has been accumulated, that is, sufficient food supply to make it possible for one man to support several families. Polygyny came in especially after women came to be captured in war and kept as slaves or wives. The practice of wife capture, indeed, and the honor attached to the custom, had much to do in making the practice of polygyny common among certain peoples. Wherever slavery has existed, we may also note, polygyny, either in its legal form or in its illegal form of concubinage, has flourished. Polygyny, indeed, is closely related with the institution of slavery and is practically coextensive with it. In the ancient world it existed among the Hebrews and among practically all of the peoples of the Orient, and also sporadically among our own Teutonic ancestors. In modern times polygyny still exists among all the Mohammedan peoples and to a greater or less degree among all semicivilized peoples. It exists in China in the form of concubinage. It even exists in the United States, for all the evidence seems to show that the Utah Mormons still practice polygyny to some extent, although it may be doubted whether polygynous unions are being formed among them at the present time.
Two facts always need to be borne in mind regarding polygyny: First, that wherever it is practiced it is relatively confined to the upper and wealthy classes, for the reason that the support of more than one family is something which only the wealthy classes in a given society could assume. Secondly, it follows that under ordinary circumstances only a small minority of a given population practice polygyny, even in countries in which it is sanctioned. In Mohammedan countries like Turkey and Egypt, for example, it is estimated that not more than five per cent of the families are polygynous, while in other regions the percentage seems to be still smaller. The reason for this is not only the economic one just mentioned, but that everywhere the sexes are relatively equal in numbers, and therefore it is impossible for polygyny to become a widespread general custom. If some men have more than one wife it is evident that other men will probably have to forego marriage entirely. This is not saying that under certain circumstances, namely, the importation of large numbers of women, a higher per cent of polygynous families may not exist. It is said that among the negroes on the west coast of Africa the number of polygynous families reaches as high as fifty per cent, owing to the fact that female slaves are largely imported into that district, and that they serve not only as wives, but do the bulk of the agricultural labor, the male negro preferring female slaves, who can do his work and be wives at the same time, to male slaves. But such cases as these are altogether exceptional and manifestly could not become general.
Summing up, we may say that the causes of polygyny are, then:
(1) First of all, the brutal lust of man. No doubt man's animal propensities have had much to do with the existence of this form of the family. Nevertheless, while male sensuality is at the basis of polygyny, it would be a mistake to think that sensuality is an adequate explanation in all cases. On the contrary, we find many other causes, chiefly, perhaps, economic, operating also to favor the development of polygyny.
(2) One of these is wife capture, as we have already seen. The captured women in war were held as trophies and slaves, and later became wives or concubines. Among all peoples at a certain stage the honor of wife capture has alone been a prolific cause of polygyny.