[Sidenote: Taboo in Tonga.] In Tonga a man guilty of theft or of any other crime was said to have broken the taboo, and as such persons were supposed to be particularly liable to be bitten by sharks, all on whom suspicion fell were compelled to go into water frequented by sharks; if they were bitten or devoured, they were guilty; if they escaped, they were innocent.[26.2] [Sidenote: Taboo in Melanesia.] In Melanesia also a system of taboo (_tambu_, _tapu_) exists; it is described as “a prohibition with a curse expressed or implied,” and derives its sanction from a belief that the chief or other person who imposes a taboo has the support of a powerful ghost or spirit (_tindalo_). If a common man took it upon himself to taboo anything, people would watch to see whether a transgressor of the taboo fell sick; if he did, it was a proof that the man who imposed the taboo was backed by a powerful ghost, and his reputation would rise accordingly. Each ghost affected a particular sort of leaf, which was his taboo mark.[26.3] In New Britain plantations, coco-nut trees, and other possessions are protected against thieves by marks of taboo attached to them, and it is thought that whoever violates the taboo will be visited by sickness or other misfortune. The nature of the sickness or misfortune varies with that of the mark or magical object which embodies the mystic virtue of the taboo. One plant used for this purpose will cause the {27} thief’s head to ache; another will make his thighs swell; another will break his legs; and so forth. Even the murmuring of a spell over a fence is believed to ensure that whoever steals sticks from the fence will have a swollen head.[27.1] In Fiji the institution of taboo was the secret of power and the strength of despotic rule. It was wondrously diffused, affecting things great and small. Here it might be seen tending a brood of chickens and there directing the energies of a kingdom. The custom was much in favour with the chiefs, who adjusted it so that it sat lightly on them and heavily on others. By it they gained influence, supplied their wants, and commanded at will their inferiors. In imposing a taboo a chief need only be checked by a regard for ancient precedent. Inferior persons endeavoured by the help of the system to put their yam-beds and plantain-plots within a sacred pale.[27.2]