+594+. Where procreation was ascribed to the union of the sexes, sexual intercourse, as being intimately connected with life, was credited with supernatural potency, generally unfavorable to vigor.[958] It has been largely prohibited on all important public occasions, such as hunting and war, and particularly in connection with religious ceremonies.[959] Various considerations may have contributed to the establishment of such customs, but in their earliest form we have, probably, to recognize not any moral effort to secure chastity, but a dread of injurious mana resident in women.[960] We may compare the fact that women have often been regarded as specially gifted in witchcraft.[961] +595+. _Taboos connected with great personages._ The theory of mana includes the belief that special supernatural power resides in the persons of tribal leaders, such as magicians, chiefs, priests. It follows that danger attaches to their bodies (particularly to head, hair, and nails), to their names, and to their food and other belongings. These things must be avoided: their food must not be eaten by common folk; their houses and other property must not be used; their nail-cuttings must be buried so that danger may be averted from the community; their names must not be mentioned. They themselves, being peculiarly sensitive to malign influences, must be protected in the house and when they walk out; and it is in some cases not safe for the common man to look on the chief as he passes through the village. +596+. Not all these regulations are found in any one community, but the principle is the same everywhere. The greatest development of taboo power in chiefs occurs in Polynesia, the home of taboo. There they are all-powerful. Whatever a chief touches becomes his property. If he enters a house, steps into a canoe, affixes his name to a field, it is his. His control appears to be limited only by the accident of his momentary desire. No one thinks of opposing his decisions--that would be fatal to the opposer. This social situation passes when a better form of civil government is established, but some features of the old conception cling to later dignitaries: till recently the nail-parings of the emperor of Japan were carefully disposed of lest, being inadvertently touched, they should bring misfortune.