TEA<. 3 
have numerous waterways by which the timber may be 
floated out to the Menam river. The trees grow on 
various soils, doing best on sandstone and metaphoric 
rocks and also on other tracts but are poor on limestone 
and laterite. They require good drainage and therefore 
grow better on hills. In Siam they are rarely met with 
in flat country. 
The Siamese distinguish three kinds of teak, Sak 
On, Sak Tong, Sak Hin. The first isa soft and inferior 
teak, of a light colour, grown on unsuitable soil. Sak 
Tong is a better quality, somewhat heavier andof a dark 
yellow colour. Sak Hin is the heaviest teak, grown un- 
der favourable conditions. The average weight of Sak 
On is 720 kg. per cbm., Sak Tong 780 kg; Sak Hin 830 
kg. per cbm. P8553 for good heavy ieak. 
Teak may be used for all building purposes, es- 
pecially for ships and houses, furniture, planks, bridges 
and carriages. It does hot shrink much. It is not heavy 
enough for Railway sleepers, besides that, an enormous 
outlay is required on long lines, along which suitable 
hardwood timber can be obtained; however it is more 
