The islanders of Timor employ hereditary marks tattooed on the cheeks, the chin, or the breasts of the women, to distinguish the different families. The same custom is followed in New Guinea. Most of these symbols are compounded of an ideograph and a letter of the alphabet. Their use is extended to distinguish owners of such things as shields and weapons. Here they form a kind of trade-mark of which the owner alone knows the meaning, and which all others are prohibited from infringing. (If I had known of this peculiarity during my travels among the Moï, I should have been more careful in noting the tattoo marks which are to be met with among the dwellers by the lakes and also the signs which are engraved on various objects. As it was I merely observed the blue markings which adorned the legs of the men and the curious red hieroglyphics inscribed in rectangles on their arms and backs. It is very likely that these were also the symbols of relationship or ownership.)

It is well to remind ourselves that the custom exists even in Europe to-day. Some of the Catholic women of Bosnia still practise the tattooing of the forearm or chest with the form of a Latin cross. The practice seems to date from the twelfth century and to be inspired by a desire for a visible sign of their religious isolation, for they live among a Mohammedan population which has never been distinguished for its tolerance.

In whatever manner the custom came into being there is little variety in the substance used in the process. The skin is firmly stretched and the figure lightly sketched upon it. Then a number of punctures very close together are made with a needle dipped in the staining matter and wrapped in cotton almost up to the point. The part is then bandaged until the lapse of a fixed period, after which all covering is taken off and the indelible traces, changed in colour to a Prussian blue, remain on the skin.

Of course the operation is attended with all manner of prayers and ceremonial. It may not take place on certain days which are regarded as unfavourable, and never without the approval and assistance of the Sorcerer. This again recalls the custom of the Catholics of Bosnia, who invariably select Sunday or some other holy day for the ceremony of engraving the sacred sign.

Like the Moï, the youths of the lower Congo reside in a specially reserved dwelling when the time has come for them to undergo the rites associated with initiation into full citizenship. In Africa, however, this residence is always outside the village and the profane are prohibited from entering under pain of death. Further, its principal function is to accommodate those who intend to enter the sect of the "Nkimba" (meaning "initiation"), members of which take the name of "Nkissi" ("enchanted"). Sometimes this voluntary retirement lasts as long as a year.

A widespread, but unfounded, belief prevails that races in a rudimentary state of civilization enjoy greater licence than those which have advanced further along the path of progress. On the contrary, the savage is subject to all manner of restrictions which make freedom of will almost a mockery. Not alone his acts but even his feelings and desires are hedged about with repressive regulations. The simple explanation is that he sees the supernatural in a very different light from us and brings it into the smallest action of his daily life. Once granted that he is not a free agent, and that unseen powers have to be consulted at every end and turn, it follows logically that a number of prohibitions arise which it is convenient to refer to in this book as "Taboos," a generic term which has been used by the Polynesians and now adopted almost universally by ethnologists.

Taboos are of every conceivable kind, royal, sacerdotal, sexual, proprietary, and they all spring from the fundamental notion that it is necessary to regulate every action in accordance with the probability of arousing or conciliating divine displeasure. Some of them follow as a corollary to the belief in the effect of magic by imitation or contact.

Thus, since in time of drought rain can be caused by spilling water on the ground, it is taboo to perform that operation at a period when a cessation from rain is required.

Other taboos are prophylactic. Thus certain persons, contact with whom is considered to be prejudicial to morals, are isolated to preserve the virtue of the others.

I have already recounted the prohibitions of every kind which regulate the behaviour of a woman during pregnancy. Here again the motive is the same. The rules as to isolation and the restriction of diet have no other object than to preserve her from dangers which are ever hovering around.