( 4 ) 
artificially wounding the tree, and experiments are 
being made by the Forest Department of the 
Federated Malay States to determine the effect upon 
the tree of systematic tapping for the resin. 
Other forms produce a Damar of slightly lower 
grade, which occurs in yellowish, translucent, 
irregular stalactitic masses of larger size than the 
“ tears ” of Damar Mata Kuching. It is probable 
that dealers sometimes mix lower grades of resin 
with the Damar Mata Kuching which they ship. 
There remains a great deal of work to be done in 
the classification of these different, but closely 
related, Damars. 
Damar Penak. 
At present the most important and valuable 
Damar of the Malay Peninsula is Damar Penak, pro- 
duced by Balanocarpus Heimii King. This, formerly, 
did not bring a high price, because it was not care- 
fully collected and was mixed with other and inferior 
Damars. In 1922 the Forest Department of the 
Federated Malay States began the experimental 
working of this product, with very beneficial results. 
The Damar is now more carefully collected and 
graded, the collector receives more pay for his 
work, and Government has a considerably enhanced 
revenue. Methods of collecting and cleaning have 
been,* 1 to some extent, standardized, and a product 
of uniform standard and guaranteed authenticity 
can now be supplied. The collecting is done in the 
following manner. The trees being very large, they 
are not easy to climb, but it seems necessary to do 
some of the collecting from the higher parts of the 
trunk and on the branches in order to get the b?st 
quality of resin and also to get a large yield. 
