ioo PAGAN TRIBES OF BORNEO chap.
yam or other root covered with projecting spikes of bamboo cane. This is done openly to spoil the crop.
Another trick is to tie under a bench in the boat of one's enemy a pebble, generally of quartz. This is supposed to make the boat so heavy that it can only travel very slowly.
These practices involve the application of charms. Charms are extensively used by all the peoples,
least so by Kayans. In every house is at least one bundle of charms, known as siap aioh by the Kenyahs, by whom more importance is attached to it than by any of the other tribes. This bundle, which is the property of the whole household or village, generally contains hair taken from the heads that hang in the gallery ; a crocodile's tooth ; the blades of a few knives that have been used in special ceremonies; a few crystals or pebbles of strange shapes ; pig's teeth of unusual shape (of both wild and domestic pig) ; feathers of a fowl (these seem to be substitutes for Bali Flaki's feathers, which they would hardly dare to touch) ; stone axe-heads called the teeth of Balingo ;1 and isangy i.e. palm leaves that have been put to ceremonial use (Fig. 80).
The whole bundle, blackened with the smoke and dust of years, hangs in the gallery over the
1 See vol. ii., p. n.
Fig. 80.aKenyah Siap.Fig. 80.a Kenyah Siap.