By some twist in the primitive way of thinking, some "false association by similarity and contiguity," the function of childbirth, unlike that of pregnancy, where the emphasis seems to have been placed in most cases on the mana principle, was held to be unclean and contaminating, and was followed by elaborate rites of purification. It may be that the pains of delivery were ascribed to the machinations of demonic powers, or possession by evil spirits,—we know that this has sometimes been the case. The use of charms and amulets, and the chanting of sacred formulæ at this dangerous time all point to such beliefs. At any rate, although the birth of the child would seem in every respect except in the presence of blood to be more closely connected with the phenomena of pregnancy than with that of menstruation, as a matter of fact the taboos on the woman in child-bed were intimately associated with those on menstruous women.

Among the ancients, the Zoroastrians considered the woman unclean at childbirth as at menstruation. [[22]] In the Old Testament, ritual uncleanness results from contact with a woman at childbirth. [[23]]

Likewise among savage tribes the same customs concerning childbirth prevail. Among the Australian aborigines women are secluded at childbirth as at menstruation, and all vessels used by them during this seclusion are burned. [[20]] The Ewe-speaking people think a mother and babe unclean for forty days after childbirth. [[24]] At menstruation and childbirth a Chippeway wife may not eat with her husband; she must cook her food at a separate fire, since any one using her fire would fall ill. [[10, v. ii, p.457]] The Alaskan explorer Dall found that among the Kaniagmuts a woman was considered unclean for several days both after delivery and menstruation; in either case no one may touch her and she is fed with food at the end of a stick. [[25]] Amongst the tribes of the Hindu Kush the mother is considered unclean for seven days after the birth of her child, and no one will eat from her hand nor will she suckle her infant during that period. In the Oxus valley north of the Hindu Kush the period is extended to forty days. [[26]]

This attitude which primitive man takes toward woman at the time of her sexual crises—menstruation, pregnancy, childbirth—are but an intensification of the feeling which he has toward her at all times. Conflicting with his natural erotic inclinations are the emotions of awe and fear which she inspires in him as the potential source of contagion, for there is always some doubt as to her freedom from bad magic, and it is much safer to regard her as unclean. [[27]] Thus the every-day life of savage tribes is hedged in by all manner of restrictions concerning the females of their group. The men have their own dwelling in many instances, where no woman may enter. So, too, she may be barred out from the temples and excluded from the religious ceremonies when men worship their deity. There are people who will not permit the women of their nation to touch the weapons, clothing, or any other possessions of the men, or to cook their food, lest even this indirect contact result in emasculation. The same idea of sympathetic magic is at the root of taboos which forbid the wife to speak her husband's name, or even to use the same dialect. With social intercourse debarred, and often no common table even in family life, it is veritably true that men and women belong to two castes.

Of the primitive institution known as the "men's house," Hutton Webster says: "Sexual separation is further secured and perpetuated by the institution known as the men's house, of which examples are to be found among primitive peoples throughout the world. It is usually the largest building in a tribal settlement ... Here the most precious belongings of the community, such as trophies and religious emblems, are preserved. Within its precincts ... women and children ... seldom or never enter ... Family huts serve as little more than resorts for the women and children." [[28]]

Many examples among uncivilized peoples bear out this description of the institution of the men's house. Amongst the Indians of California and in some Redskin tribes the men's clubhouse may never be entered by a squaw under penalty of death. The Shastika Indians have a town lodge for women, and another for men which the women may not enter. [[15]]Among the Fijis women are not allowed to enter a bure or club house, which is used as a lounge by the chiefs. In the Solomon Islands women may not enter the men's tambu house, and on some of the islands are not even permitted to cross the beach in front of it. [[29]] In the Marquesas Islands the ti where the men congregate and spend most of their time is taboo to women, and protected by the penalty of death from the pollution of a woman's presence. [[30]]

Not only is woman barred from the men's club house, but she is also often prohibited from association and social intercourse with the opposite sex by many other regulations and customs. Thus no woman may enter the house of a Maori chief,[[31]] while among the Zulus, even if a man and wife are going to the same place they never walk together.[[32]] Among the Baganda wives are kept apart from the men's quarters.[[21]] The Ojibway Indian Peter Jones says of his people: "When travelling the men always walk on before. It would be considered a great presumption for the wife to walk by the side of her husband."[[33]] In many islands of the South Seas the houses of important men are not accessible to their wives, who live in separate huts. Among the Bedouins a wife may not sit in any part of the tent except her own corner, while it is disgraceful for a man to sit under the shadow of the women's roffe (tent covering).[[34]] Among the Hindus, no female may enter the men's apartments. In the Society and Sandwich Islands the females were humiliated by taboo, and in their domestic life the women lived almost entirely by themselves. The wife could not eat the same food, could not eat in the same place, could not cook by the same fire. It was said that woman would pollute the food.[[35]] In Korea a large bell is tolled at about 8 p.m. and 3 a.m. daily, and between these hours only are women supposed to appear in the streets.[[36]] In the New Hebrides there is a curious segregation of the sexes, with a dread among the men of eating anything female.[[37]]

Among many tribes this segregation of the women and the separation of the sexes begin at an early age, most often at the approach of puberty, which is earlier in primitive peoples than in our own race.[[38]] The boys usually go about with the father, while the girls remain with the mother. This is true in Patagonia, where the boys begin to go with the father at ten, the daughters with the mother at nine.[[39]] In Korea boys and girls are separated at seven. From that time the Korean girl is absolutely secluded in the inner court of her father's home. Mrs Bishop says: "Girl children are so successfully hidden away that ... I never saw one girl who looked above the age of six ... except in the women's rooms."[[36]] Among the northern Indian girls are from the age of eight or nine prohibited from joining in the most innocent amusements with children of the opposite sex, and are watched and guarded with such an unremitting attention as cannot be exceeded by the most rigid discipline of an English boarding-school.[[40]] Similar arrangements are reported among the Hill Dyaks,[[41]] certain Victorian tribes,[[17]] and many others. As already instanced, the separation of the sexes extends even to brothers and sisters and other close relatives. Thus in Fiji brothers and sisters are forbidden by national and religious custom to speak to each other.[[9]] In Melanesia, according to Codrington, the boy begins to avoid his mother when he puts on clothing, and his sister as soon as she is tattooed.[[42]] In the exclusive Nanburi caste of Travancore brothers and sisters are separated at an early age.

Women are more often than not excluded also from religious worship on account of the idea of their uncleanness. The Arabs in many cases will not allow women religious instruction. The Ansayrees consider woman to be an inferior being without a soul, and therefore exclude her from religious services.[[34]] In the Sandwich Islands women were not allowed to share in worship or festivals.[[35]] The Australians are very jealous lest women should look into their sacred mysteries. It is death for a woman to look into a Bora.[[20]] In Fiji women are kept away from worship and excluded from all the temples.[[9]] The women of some of the Indian hill-tribes may not sacrifice nor appear at shrines, nor take part in religious festivals. In New Ireland women are not allowed to approach the temples.[[43]] In the Marquesas Islands the Hoolah-hoolah ground, where festivals are held, is taboo to women, who are killed if they enter or even touch with their feet the shadow of the trees.[[30]] Women are also excluded from the sacred festivals of the Ahts.[[44]] In the Amazon region, the women are not even permitted to see the objects used in important ceremonies. If any woman of the Uaupes tribe happens to see the masks used in the tribal ceremony she is put to death.[[45]]

Crawley has explained the taboos on the sexes eating together and on the cooking of food by women for men as due to the superstitious belief that food which has come in contact with or under the influence of the female is capable of transmitting her properties. Some southern Arabs would die rather than accept food from a woman.[[12]] Among the old Semites it was not the custom for a man to eat with his wife and children. Among the Motu of New Guinea when a man is helega, he may not eat food that his wife has cooked.[[46]] South Australian boys during initiation are forbidden to eat with the women, lest they "grow ugly or become grey."