The method of observing the sun described above is universal among the
Kenyahs, but some of the Kayans practise a different method. A hole is
made in the roof of the weather-prophet's chamber in the long-house,
and the altitude of the mid-day sun and its direction, north or south
of the meridian, are observed by measuring along a plank fixed on
the floor the distance of the patch of sunlight (falling through the
hole on to the plank) from the point vertically below the hole. The
horizontal position of the plank is secured by placing upon it smooth
spherical stones and noting any inclination to roll. The sunbeam which
enters this hole is called KLEPUT TOH (=the blow-pipe of the spirit).
Some of the Klemantans practise a third method to determine when
the time for sowing is at hand, using a bamboo some feet in length
which bears a mark at a level which is empirically determined. The
bamboo is filled with water while in the vertical position. It is
then tilted till it points towards a certain star, when of course
some water escapes. After it has been restored to the vertical, the
level of the surface of the remaining water is noted. The coincidence
of this level with the mark mentioned above indicates that the time
for sowing is come.
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