(M186) It is highly significant that all these tribes of New Guinea apply the same word to the bull-roarer and to the monster, who is supposed to swallow the novices at circumcision, and whose fearful roar is represented by the hum of the harmless wooden instruments. The word in the speech of the Yabim and Bukaua is _balum_; in that of the Kai it is _ngosa_; and in that of the Tami it is _kani_. Further, it deserves to be noted that in three languages out of the four the same word which is applied to the bull-roarer and to the monster means also a ghost or spirit of the dead, while in the fourth language (the Kai) it signifies “grandfather.” From this it seems to follow that the being who swallows and disgorges the novices at initiation is believed to be a powerful ghost or ancestral spirit, and that the bull-roarer, which bears his name, is his material representative. That would explain the jealous secrecy with which the sacred implement is kept from the sight of women. While they are not in use, the bull-roarers are stowed away in the men’s club-houses, which no woman may enter; indeed no woman or uninitiated person may set eyes on a bull-roarer under pain of death.(630) Similarly among the Tugeri or Kaya-Kaya, a large Papuan tribe on the south coast of Dutch New Guinea, the name of the bull-roarer, which they call _sosom_, is given to a mythical giant, who is supposed to appear every year with the south-east monsoon. When he comes, a festival is held in his honour and bull-roarers are swung. Boys are presented to the giant, and he kills them, but considerately brings them to life again.(631)