( 16 ) 
tong ( Dyera spp.). Adulteration with hangkang or 
djelutong causes a change in colour and appearance, 
a decrease in resiliency, and a peculiar smell.” 
2. Getah Taban Puteh. 
Palaquium obovatum King and Gamble. 
This tree is known only from the Malay Penin- 
sula. It is a larger tree than the others mentioned 
and is usually found on rather higher ground than 
the taban merah, although the two may be found 
together. The leaves are larger and blunter and 
the gutta is whiter, flows much more freely, and is 
less than half the value of that of taban merah. 
3. Getah Hangkang. 
Palaquium leiocarpum Boerl. 
This is a large tree % which is found only in 
Borneo, where it occurs on low lying ground. The 
gufta is whitish or slightly reddish, exported in large 
quantity, of rather low value, and used to adulterate 
the better kinds. 
Getah Soh or Ang So. 
This is a name given to the above species on the 
Singapore market. Frequently attempts are made 
to colour this material red in the effort to substitute 
it for getah taban merah, and species of bark are 
frequently included with it. One lot which was 
examined in Singapore was stained with the bark 
of Tengar ( Ceriops Candolleana Arn.), fragments 
of which were included with the sample. 
