But all the forms of the group marriage known to us are accompanied by such peculiarly complicated circumstances that they of necessity point to a preceding simpler form of sexual intercourse and, hence, in the last instance to a period of unrestricted sexual intercourse corresponding to a transition from the animal to man. Therefore the references to animal marriages lead us back to precisely that point, from which they were intended to remove us forever.
What does the term "unrestricted sexual intercourse" mean? Simply, that the restrictions in force now were not observed formerly. We have already seen the barrier of jealousy falling. If anything is certain, it is that jealousy is developed at a comparatively late stage. The same is true of incest. Not only brother and sister were originally man and wife, but also the sexual intercourse between parents and children is permitted to this day among many nations. Bancroft testifies to the truth of this among the Kaviats of the Behring Strait, the Kadiaks of Alaska, the Tinnehs in the interior of British North America; Letourneau compiled reports of the same fact in regard to the Chippeway Indians, the Coocoos in Chile, the Caribeans, the Carens in Indo-China, not to mention the tales of ancient Greeks and Romans about the Parthians, Persians, Scythians, Huns and so forth. Before incest was invented (and it is an invention, a really valuable one indeed), sexual intercourse between parents and children could not be any more repulsive than between other persons belonging to different generations, which takes place even in our day among the most narrow-minded nations without causing any horror. Even old "maids" of more than sixty years sometimes, if they are rich enough, marry young men of about thirty. Eliminating from the primeval forms of the family known to us those conceptions of incest—conceptions totally different from ours and often enough in direct contradiction with them—we arrive at a form of sexual intercourse that can only be designated as unrestricted. Unrestricted in the sense that the barriers drawn later on by custom did not yet exist. This in no way necessarily implies for practical purposes an injudicious pell-mell intercourse. The separate existence of pairs for a limited time is not out of the question, and even comprises the majority of cases in the group marriage of our days. And if the latest repudiator of such a primeval state, Westermarck, designates as marriage every case, where both sexes remain mated until the birth of the offspring, then this is equivalent to saying that this kind of marriage may well exist during a stage of unrestricted intercourse without contradicting license, i. e., absence of barriers drawn by custom for sexual intercourse. Westermarck bases himself on the opinion that "license includes the suppression of individual affections" so that "prostitution is its most genuine form." To me it rather seems that any understanding of primeval conditions is impossible as long as we look at them through brothel spectacles. We shall return to this point in the group marriage.
According to Morgan, the following forms developed from this primeval state at an apparently early stage:
1. THE CONSANGUINE FAMILY.
The Consanguine Family is the first step toward the family. Here the marriage groups are arranged by generations: all the grand-fathers and grand-mothers within a certain family are mutually husbands and wives; and equally their children, the fathers and mothers, whose children form a third cycle of mutual mates. The children of these again, the great-grandchildren of the first cycle, will form a fourth. In this form of the family, then, only ancestors and descendants are excluded from what we would call the rights and duties of marriage. Brothers and sisters, male and female cousins of the first, second and more remote grades, are all mutually brothers and sisters and for this reason mutual husbands and wives. The relation of brother and sister quite naturally includes at this stage the practice of sexual intercourse.[12]
The typical form of such a family would consist of the offspring of one pair, representing again the descendants of each grade as mutual brothers and sisters and, therefore, mutual husbands and wives. The consanguine family is extinct. Even the crudest nations of history do not furnish any proofs of it. But the Hawaiian system of kinship, in force to this day in all Polynesia, compels us to acknowledge its former existence, for it exhibits grades of kinship that could only originate in this form of the family. And the whole subsequent development of the family compels us to admit this form as a necessary step.
2. THE PUNALUAN FAMILY.
While the first step of organization consisted in excluding parents and children from mutual sexual intercourse, the second was the erection of a barrier between brother and sister. This progress was much more important on account of the greater equality in the ages of the parties concerned, but also far more difficult. It was accomplished gradually, probably beginning with the exclusion of the natural sister (i. e., on the mother's side) from sexual intercourse, first in single cases, then becoming more and more the rule (in Hawaii exceptions were still noted during the nineteenth century), and finally ending with the prohibition of marriage even among collateral brothers and sisters, i. e., what we now term brother's and sister's children, grandchildren, and great-grandchildren. This progress offers, according to Morgan, an excellent illustration how the principle of natural selection works. Without question, the tribes limiting inbreeding by this progress developed faster and more completely than those retaining the marriage between brothers and sisters as a rule and law. And how powerfully the influence of this progress was felt, is shown by the institution of the gens, directly attributable to it and passing far beyond the goal. The gens is the foundation of the social order of most, if not all, barbarian nations, and in Greece and Rome we step immediately from it to civilization.
Every primeval family necessarily had to divide after a few generations. The originally communistic and collective household existing far into the middle stage of barbarism, involved a certain maximum size of the family, variable according to conditions, but still limited in a degree. As soon as the conception of the impropriety of sexual intercourse between children of the same mother arose, it naturally became effective on such occasions as the division of old and the foundation of new household communities (which, however, did not necessarily coincide with the family group). One or more series of sisters became the center of one group, their natural brothers that of another. In this or a similar manner that form which Morgan styles the Punaluan family developed from the consanguine family. According to Hawaiian custom, a number of sisters, natural or more remote (i. e., cousins of the first, second and more remote degrees) were the mutual wives of their mutual husbands, their natural brothers excepted. These men now no longer addressed one another as "brother"—which they no longer had to be—but as "Punalua," i. e., intimate companion, associate as it were. Likewise a series of natural or more remote brothers lived in mutual marriage with a number of women, not their natural sisters, and these women referred to each other as "Punalua." This is the classical form of a family, which later admitted of certain variations. Its fundamental characteristic was mutual community of husbands and wives within a given family with the exclusion of the natural brothers (or sisters) first, and of the more remote grades later.