+185+. Thus the curious custom of the couvade,[340] in which the husband, and not the wife, goes to bed on the birth of the child, may be an effort on the man's part to share in the labor of the occasion, since he has to take care of the child; or it may be primarily an economical procedure--the woman must go out to work and the man must therefore stay at home to take care of the house and the child. But probably something more than this is involved--there seems to be fear of supernatural danger. It is not necessary to suppose that the man takes the woman's place in order to attract to himself the malevolent spirits that figure on such occasions; but the belief in the intimate vital connection between father and child may induce the desire to guard the former against injury. Similar precautions are taken in regard to the mother;[341] some of these have a natural basis in her physical condition which necessitates a certain carefulness. Where such customs connected with birth prevail, departure from them is thought to be dangerous or fatal; but such a feeling exists in regard to all social customs. +186+. The belief that the newborn child is the reincarnation of an ancestor is scientific rather than religious. In Central Australia every child is held to be the reincarnation of a spirit ancestor; a similar idea is found in North America, in Western Africa, and in Orissa.[342] In searching for the cause of birth it is not unnatural that it should be ascribed to a preëxistent being who desires to enter again into human life.[343] +187+. The ablutions or sprinklings of water practiced in some places appear to be merely the expression of welcome into the community.[344] The choice of a name for the child is frequently connected with religious ideas. Among many tribes the custom is to seek for some hint from the child itself, as by repeating a number of names and observing which of them the child seems to recognize or accept. The help of a deity is sometimes invoked, as in Borneo, where a pig is killed and its spirit thus sent as messenger to a particular god, who is asked to approve.[345] In Samoa a tutelary spirit is sometimes chosen for the infant;[346] during childhood the child bears the name of a god, who seems to be regarded as its protector. The identification of person and name, common among savages, is also scientific rather than religious. At the entrance into a secret society the novitiate may receive a new name.[347] The adoption of a child's name by the father (teknonymy) may be simply the expression of paternal pride, or possibly it is the expression of the father's protection or of his identification with the child. The adoption of a secret name that involves the man's personality and is therefore to be withheld from enemies belongs to adult life.